What are the physical properties of the products of these reactions?
Q. Hey can anyone tell me what the products of these physical reactions look/smell like? NH4Cl+AgNO3 BaCl2+AgNO3 H2SO4+AgNO3
Asked by Jerry H - Tue Jun 10 16:02:38 2008 - - 1 Answers - 0 Comments
A. Presumably these are done in dilute aqueous solutions then the 1st 2 both will give white precipitates of silver chloride (which will go grey - black on exposure to light) The 3rd will just give a clear colorless solution.
Answered by Aurium - Tue Jun 10 16:49:53 2008
Q. Hey can anyone tell me what the products of these physical reactions look/smell like? NH4Cl+AgNO3 BaCl2+AgNO3 H2SO4+AgNO3
Asked by Jerry H - Tue Jun 10 16:02:38 2008 - - 1 Answers - 0 Comments
A. Presumably these are done in dilute aqueous solutions then the 1st 2 both will give white precipitates of silver chloride (which will go grey - black on exposure to light) The 3rd will just give a clear colorless solution.
Answered by Aurium - Tue Jun 10 16:49:53 2008
How to determine strength of Acids?
Q. List the solutions in order from strongest acid to weakest Solution (pH): NaPO4 (11), Na2CO3 (11) , NaOH (11) , NH3 (10), NaCl (6), NH4Cl (6) , CH3COOH (4) , H2SO4 (1) , HCl (1)
Asked by Sani - Fri May 16 22:15:26 2008 - - 6 Answers - 0 Comments
A. The easiest is to remember: The 6 Strongest Acids (in order of increasing strength): HCl, HBr, HI, HNO3, H2SO4, HClO4 The 7 Strongest Bases (increasing): LiOH, NaOH, KOH, RbOH, CsOH, Sr(OH)2, Ba(OH)2 **these ionize completely in water/solution As for the question: H2SO4, HCl, Acetic Acid (CH3COOH), ammonium chloride, sodium chloride, ammonia, NaPO4, Na2CO3, sodium hydroxide **2 notes: 1) a "lower" pH is a stronger acid. b/c pH is measured by 10^-X; the smaller the "x" value, the larger the concentration of H+ ions. 2) some of the compounds you listed are salts...which do not have pHs even when they're in solutions b/c salts are generally formed by a column 1 or 2 metal and a halogen.
Answered by beagle171717 - Fri May 16 22:54:12 2008
Q. List the solutions in order from strongest acid to weakest Solution (pH): NaPO4 (11), Na2CO3 (11) , NaOH (11) , NH3 (10), NaCl (6), NH4Cl (6) , CH3COOH (4) , H2SO4 (1) , HCl (1)
Asked by Sani - Fri May 16 22:15:26 2008 - - 6 Answers - 0 Comments
A. The easiest is to remember: The 6 Strongest Acids (in order of increasing strength): HCl, HBr, HI, HNO3, H2SO4, HClO4 The 7 Strongest Bases (increasing): LiOH, NaOH, KOH, RbOH, CsOH, Sr(OH)2, Ba(OH)2 **these ionize completely in water/solution As for the question: H2SO4, HCl, Acetic Acid (CH3COOH), ammonium chloride, sodium chloride, ammonia, NaPO4, Na2CO3, sodium hydroxide **2 notes: 1) a "lower" pH is a stronger acid. b/c pH is measured by 10^-X; the smaller the "x" value, the larger the concentration of H+ ions. 2) some of the compounds you listed are salts...which do not have pHs even when they're in solutions b/c salts are generally formed by a column 1 or 2 metal and a halogen.
Answered by beagle171717 - Fri May 16 22:54:12 2008
arrange the weak and strong acids in order of increasing acid strength?
Q. H2SO4 (sulfuric acid), HC2H3O2 (acetic acid), NaC2H3O2 (sodium acetate), and NH4Cl (ammonium chloride) I know sulfuric acid is the strongest, but i thought acetic acid was a weak acid, but when i tested a .1 M solution of it with methyl orange indicator, the solution turned red, which indicates that it is a strong acid.
Asked by confused45 - Thu May 15 17:20:30 2008 - - 1 Answers - 0 Comments
A. H2SO4 is indeed the strongest acid. Acetic acid is the next. I don't know what the pH range for methyl orange indicator is, but I think that concentration of acetic acid should have a pH around 3.5-4 Ammonium chloride would be the next stronger acid, and finally, sodium acetate is actually a base.
Answered by hcbiochem - Thu May 15 17:29:45 2008
Q. H2SO4 (sulfuric acid), HC2H3O2 (acetic acid), NaC2H3O2 (sodium acetate), and NH4Cl (ammonium chloride) I know sulfuric acid is the strongest, but i thought acetic acid was a weak acid, but when i tested a .1 M solution of it with methyl orange indicator, the solution turned red, which indicates that it is a strong acid.
Asked by confused45 - Thu May 15 17:20:30 2008 - - 1 Answers - 0 Comments
A. H2SO4 is indeed the strongest acid. Acetic acid is the next. I don't know what the pH range for methyl orange indicator is, but I think that concentration of acetic acid should have a pH around 3.5-4 Ammonium chloride would be the next stronger acid, and finally, sodium acetate is actually a base.
Answered by hcbiochem - Thu May 15 17:29:45 2008
Solubility...!?
Q. Need to show work. Using general solubility rules, write the balanced molecular equation when the following aq solutions are mixed. Underline the formula of the solid. If no precipitation reaction is likely, explain why. A. NH4Cl, H2SO4 B. K2CO3, SnCl4 C. NH4Cl, Pb(NO3)2 D. CuSO4, KOH E.Na3PO4, CrCl3 F. (NH4)2S, FeCl3
Asked by Olivia K - Wed Jun 25 13:47:23 2008 - - 1 Answers - 0 Comments
A. A. Nothing happens, just two acids. Ammonium sulfate is soluble. B. 2 K2CO3 (aq) + SnCl4 (aq) Sn(CO3)2 (s) + 4 KCl (aq) C. 2 NH4Cl (aq) + Pb(NO3)2 (aq) PbCl2 (s) + 2 NH4NO3 (aq) D. CuSO4 (aq) + 2 KOH (aq) Cu(OH)2 (s) + K2SO4 (aq) E. Na3PO4(aq) + CrCl3 (aq) CrPO4 (s) + 3 NaCl (aq) F. 3 (NH4)2S (aq) + 2 FeCl3 (aq) Fe2S3 (s) + 6 NH4Cl (aq)
Answered by Glenguin - Wed Jun 25 22:39:43 2008
Q. Need to show work. Using general solubility rules, write the balanced molecular equation when the following aq solutions are mixed. Underline the formula of the solid. If no precipitation reaction is likely, explain why. A. NH4Cl, H2SO4 B. K2CO3, SnCl4 C. NH4Cl, Pb(NO3)2 D. CuSO4, KOH E.Na3PO4, CrCl3 F. (NH4)2S, FeCl3
Asked by Olivia K - Wed Jun 25 13:47:23 2008 - - 1 Answers - 0 Comments
A. A. Nothing happens, just two acids. Ammonium sulfate is soluble. B. 2 K2CO3 (aq) + SnCl4 (aq) Sn(CO3)2 (s) + 4 KCl (aq) C. 2 NH4Cl (aq) + Pb(NO3)2 (aq) PbCl2 (s) + 2 NH4NO3 (aq) D. CuSO4 (aq) + 2 KOH (aq) Cu(OH)2 (s) + K2SO4 (aq) E. Na3PO4(aq) + CrCl3 (aq) CrPO4 (s) + 3 NaCl (aq) F. 3 (NH4)2S (aq) + 2 FeCl3 (aq) Fe2S3 (s) + 6 NH4Cl (aq)
Answered by Glenguin - Wed Jun 25 22:39:43 2008
which of these substances are soluble in water?
Q. AgCl CuCl2 PbSO4 H2SO4 NaCl NH4Cl Fe(OH)3 koh i2 NaNO3
Asked by tertaksmith - Fri Jan 25 17:51:31 2008 - - 2 Answers - 0 Comments
A. Many of these are soluble. Some have very LOW solubilities. I will list only those with moderate to high solubilities: CuCl2 H2SO4 NaCl NH4Cl KOH NaNO3
Answered by ( ) - Fri Jan 25 17:56:53 2008
Q. AgCl CuCl2 PbSO4 H2SO4 NaCl NH4Cl Fe(OH)3 koh i2 NaNO3
Asked by tertaksmith - Fri Jan 25 17:51:31 2008 - - 2 Answers - 0 Comments
A. Many of these are soluble. Some have very LOW solubilities. I will list only those with moderate to high solubilities: CuCl2 H2SO4 NaCl NH4Cl KOH NaNO3
Answered by ( ) - Fri Jan 25 17:56:53 2008
List the most acidic of the following solutions and the most weakly acidic of the following.answer soon please?
Q. H2SO4 HC2H3O2 NH4Cl
Asked by yoyoyolalala - Sun Jul 5 22:44:18 2009 - - 2 Answers - 0 Comments
Q. H2SO4 HC2H3O2 NH4Cl
Asked by yoyoyolalala - Sun Jul 5 22:44:18 2009 - - 2 Answers - 0 Comments
chemistry about pH?
Q. I would like to ask the following 3 questions: what is the answer if you are asked to arrange the pH of NH4Cl, NaCl, HCl, H2SO4 and NaCH3COO in descending order (all are aqueous solution and 1M)? which of the the four 1M solution of the following salts has the highest pH , NaNO3, Na2CO3, NH4Cl, NaHCO3? How do you determine which of them have the highest pH, especially those NH4Cl, NaNO3, NaCl (not typical acid or alkali like HCl or NaOH)? thanks a lot i am not abusing this place to search for answer to my HW. those questions are from my exmination and i got them wrong, answer to question one is NH4Cl>NaCl>NaCH3COO>HCl>H 2SO4 answer to question two is Na2CO3. i just want to learn how to tackle these kind of quesitons and please help… [cont.]
Asked by nilbore - Sun Aug 20 03:42:13 2006 - - 3 Answers - 0 Comments
A. pH is a convinient way to represent how much acidity something has. As you know, this is directly proportional to the number of H+ and since pH=-log[H+], Lower the number, more acidic it is. Having that said, out of NH4Cl, NaCl, HCl, H2SO4 and NaCH3COO lets see which should have the highest pH. (Basic). You have to consider that all the mentioned chemicals above in water (aqueous soln) breaks up into its ions. Sodium Acetate breaks up into --> Na+ CH3COO-. The CH3COO- (Acetate ion) is a conjugate base of a weak acid (Acetic acid) and is a fairly strong base. This will give it a high pH. (Above 7) Next is NaCl. This in water does not create any H+ or OH-, therefore its neutral. (About 7) Next is NH4Cl. This will break up… [cont.]
Answered by ! K K - Sun Aug 20 04:13:22 2006
Q. I would like to ask the following 3 questions: what is the answer if you are asked to arrange the pH of NH4Cl, NaCl, HCl, H2SO4 and NaCH3COO in descending order (all are aqueous solution and 1M)? which of the the four 1M solution of the following salts has the highest pH , NaNO3, Na2CO3, NH4Cl, NaHCO3? How do you determine which of them have the highest pH, especially those NH4Cl, NaNO3, NaCl (not typical acid or alkali like HCl or NaOH)? thanks a lot i am not abusing this place to search for answer to my HW. those questions are from my exmination and i got them wrong, answer to question one is NH4Cl>NaCl>NaCH3COO>HCl>H 2SO4 answer to question two is Na2CO3. i just want to learn how to tackle these kind of quesitons and please help… [cont.]
Asked by nilbore - Sun Aug 20 03:42:13 2006 - - 3 Answers - 0 Comments
A. pH is a convinient way to represent how much acidity something has. As you know, this is directly proportional to the number of H+ and since pH=-log[H+], Lower the number, more acidic it is. Having that said, out of NH4Cl, NaCl, HCl, H2SO4 and NaCH3COO lets see which should have the highest pH. (Basic). You have to consider that all the mentioned chemicals above in water (aqueous soln) breaks up into its ions. Sodium Acetate breaks up into --> Na+ CH3COO-. The CH3COO- (Acetate ion) is a conjugate base of a weak acid (Acetic acid) and is a fairly strong base. This will give it a high pH. (Above 7) Next is NaCl. This in water does not create any H+ or OH-, therefore its neutral. (About 7) Next is NH4Cl. This will break up… [cont.]
Answered by ! K K - Sun Aug 20 04:13:22 2006
can someone please help me answer these questions?
Q. which substance can be classified as an arrhenius acid a)KF b)HF c)KOH d)LiH 2) a solution of a base differs from a solution of an acid in that the solution of a base a) is able to conduct electricity b)is able to cause an indicator color change c)has a greater [H3O+] d) has a greater [OH-] 3)a sample of pure water contains a) neither OH- ions nor H3O+ions b)equal concentrations of OH- and H3O+ ions c)a larger concentration of H3O+ ions than OH- ions d) a smaller concentration of H3O+ ions that OH- ions 4)which 0.1 M solution contains the highest concentration of OH- ions? a)H2SO4 b)Nh4Cl c)KNO3 D) NaOH 5)which ph value indicated the most basic solution? a)7 b)8 c)3 d)11 6)as an acidic solution is added to a basic solution the pH of the… [cont.]
Asked by Kristina A - Thu May 1 23:41:50 2008 - - 2 Answers - 0 Comments
A. 1) b 2) c 3) b 4) d 5) d 6) b 7) c
Answered by Dr.A - Fri May 2 00:07:53 2008
Q. which substance can be classified as an arrhenius acid a)KF b)HF c)KOH d)LiH 2) a solution of a base differs from a solution of an acid in that the solution of a base a) is able to conduct electricity b)is able to cause an indicator color change c)has a greater [H3O+] d) has a greater [OH-] 3)a sample of pure water contains a) neither OH- ions nor H3O+ions b)equal concentrations of OH- and H3O+ ions c)a larger concentration of H3O+ ions than OH- ions d) a smaller concentration of H3O+ ions that OH- ions 4)which 0.1 M solution contains the highest concentration of OH- ions? a)H2SO4 b)Nh4Cl c)KNO3 D) NaOH 5)which ph value indicated the most basic solution? a)7 b)8 c)3 d)11 6)as an acidic solution is added to a basic solution the pH of the… [cont.]
Asked by Kristina A - Thu May 1 23:41:50 2008 - - 2 Answers - 0 Comments
A. 1) b 2) c 3) b 4) d 5) d 6) b 7) c
Answered by Dr.A - Fri May 2 00:07:53 2008
Can anybody rank these from most acidic (1) to most basic (14)?
Q. NH4Cl NaHCO3 KNO3 NH3 H2SO4 HCl H2SO3 CH3COOH (HAc) hcn naOH NaCN NaCH3COO (NaAc) Na3PO4 Thanks in advance. To answer the first poster's question: I went to a Catholic high school and received a "C" in Chemistry. I received an "A" in every subject but that one. I see you can't answer it either. LOL Have a great night.
Asked by richietcfan - Mon Dec 11 03:41:19 2006 - - 2 Answers - 0 Comments
A. First of all you are providing 13 molecules so we have to rank them from 1 to 13... The strength of an acid is expressed by its dissociation constant Ka. The stronger it is the higher the Ka. Usually we express them as pKa=-logKa so (because of the -log) th stronger the acid the lower the pKa. Similarly for bases the lower the pKb the stronger the base. For conjugate acids and bases (an acid dissociates to its conjugate base and H+, and a base turns into its conjugate acid when it receives a H+) pKb=14-pKa at room temperature. Having said that... 1. HCl pKa= -8.0 is yhe strongest acid 2. H2SO4 pKa1= -3.0 (Has two dissociation constants but we consider the first which is the strongest) 3. H2SO3 pKa1=1.81 4. AcOH (is the proper way to… [cont.]
Answered by bellerophon - Mon Dec 11 06:34:29 2006
Q. NH4Cl NaHCO3 KNO3 NH3 H2SO4 HCl H2SO3 CH3COOH (HAc) hcn naOH NaCN NaCH3COO (NaAc) Na3PO4 Thanks in advance. To answer the first poster's question: I went to a Catholic high school and received a "C" in Chemistry. I received an "A" in every subject but that one. I see you can't answer it either. LOL Have a great night.
Asked by richietcfan - Mon Dec 11 03:41:19 2006 - - 2 Answers - 0 Comments
A. First of all you are providing 13 molecules so we have to rank them from 1 to 13... The strength of an acid is expressed by its dissociation constant Ka. The stronger it is the higher the Ka. Usually we express them as pKa=-logKa so (because of the -log) th stronger the acid the lower the pKa. Similarly for bases the lower the pKb the stronger the base. For conjugate acids and bases (an acid dissociates to its conjugate base and H+, and a base turns into its conjugate acid when it receives a H+) pKb=14-pKa at room temperature. Having said that... 1. HCl pKa= -8.0 is yhe strongest acid 2. H2SO4 pKa1= -3.0 (Has two dissociation constants but we consider the first which is the strongest) 3. H2SO3 pKa1=1.81 4. AcOH (is the proper way to… [cont.]
Answered by bellerophon - Mon Dec 11 06:34:29 2006
balancing equations general chemistry?
Q. I need help balancing equations!! Please help! NaOH+HCl BaCl2+H2SO4 NH4OH+H2SO4 Na2CO3+CaCl2 CuSO4+NH4Cl NaOH+HNO3 FeCl3+NH4OH Na2SO3+HCL
Asked by huh - Mon Oct 8 22:26:58 2007 - - 1 Answers - 0 Comments
A. NaOH + HCl > NaCl + H2O Simple acid base neutralization. Let us try one down the line. FeCl3 + 3NH4OH > Fe(OH)3 + 3NH4Cl See. Just balance atoms. These are easy trial and error equations that you need to practice. Remember charges when first setting your raw species equation up.
Answered by jonmcn49 - Mon Oct 8 22:44:06 2007
Q. I need help balancing equations!! Please help! NaOH+HCl BaCl2+H2SO4 NH4OH+H2SO4 Na2CO3+CaCl2 CuSO4+NH4Cl NaOH+HNO3 FeCl3+NH4OH Na2SO3+HCL
Asked by huh - Mon Oct 8 22:26:58 2007 - - 1 Answers - 0 Comments
A. NaOH + HCl > NaCl + H2O Simple acid base neutralization. Let us try one down the line. FeCl3 + 3NH4OH > Fe(OH)3 + 3NH4Cl See. Just balance atoms. These are easy trial and error equations that you need to practice. Remember charges when first setting your raw species equation up.
Answered by jonmcn49 - Mon Oct 8 22:44:06 2007
How to solve double replacement problems?
Q. how do you know if the reaction will take place or not? How do you identify a gas? indicate all gaseous products by (g) and all unionized or insoluble products by (^). if the reaction doesn't take place, indicate the reason 1) CuS + 2KCl ---> CuCl2 + K2S 2) Hg2Cl2 + HCl --> 3) H2O + K2SO4 --> H2SO4 + K2O 4) NH4Cl + KOH --> KCL + NH4OH 5) NaNO3 + KC2H3O2 --> NaC2H3O2 + KNO3 6) 2NH4OH + BaCl2 --> 2NH4Cl + Ba(OH)2 7) Ca(NO3)2 + Na2SO4 --> CaSO4 + 2NaNO3 8) Hg2(NO3)2 + K2SO4 --> 9) Pb(NO3)2 + Al(NO3)3 --> 10) KCl + Hg2SO4 --> K2SO4 + HgCl
Asked by Joonsu K - Mon Aug 18 11:25:18 2008 - - 4 Answers - 0 Comments
A. 1) CuS(^) + 2KCl no reaction A reaction will attempt to go into the direction with the product of lowest solubility. CuCl2 is soluble, so the reaction will not proceed. 2) Hg2Cl2(^) + HCl no reaction Similar reasons. 3) H2O(^) + K2SO4 no reaction K2O is a base, and H2SO4 is an acid. It is more favourable for them to neutralise each other to form water and a salt. 4) NH4Cl + KOH KCl + NH4OH NH4OH will decompose. NH4OH NH3(g) + H2O 5) NaNO3 + KC2H3OH will not proceed An equilibrium may form, where the Na and K interchange, but it will not form a full reaction. 6) 2NH4OH + BaCl2 2NH4Cl + Ba(OH)2(^) Excess barium hydroxide will precipitate. 7) Ca(NO3)2 + Na2SO4 CaSO4(^) + 2NaNO3 CaSO4 is insoluble and will… [cont.]
Answered by kumorifox - Mon Aug 18 11:39:59 2008
Q. how do you know if the reaction will take place or not? How do you identify a gas? indicate all gaseous products by (g) and all unionized or insoluble products by (^). if the reaction doesn't take place, indicate the reason 1) CuS + 2KCl ---> CuCl2 + K2S 2) Hg2Cl2 + HCl --> 3) H2O + K2SO4 --> H2SO4 + K2O 4) NH4Cl + KOH --> KCL + NH4OH 5) NaNO3 + KC2H3O2 --> NaC2H3O2 + KNO3 6) 2NH4OH + BaCl2 --> 2NH4Cl + Ba(OH)2 7) Ca(NO3)2 + Na2SO4 --> CaSO4 + 2NaNO3 8) Hg2(NO3)2 + K2SO4 --> 9) Pb(NO3)2 + Al(NO3)3 --> 10) KCl + Hg2SO4 --> K2SO4 + HgCl
Asked by Joonsu K - Mon Aug 18 11:25:18 2008 - - 4 Answers - 0 Comments
A. 1) CuS(^) + 2KCl no reaction A reaction will attempt to go into the direction with the product of lowest solubility. CuCl2 is soluble, so the reaction will not proceed. 2) Hg2Cl2(^) + HCl no reaction Similar reasons. 3) H2O(^) + K2SO4 no reaction K2O is a base, and H2SO4 is an acid. It is more favourable for them to neutralise each other to form water and a salt. 4) NH4Cl + KOH KCl + NH4OH NH4OH will decompose. NH4OH NH3(g) + H2O 5) NaNO3 + KC2H3OH will not proceed An equilibrium may form, where the Na and K interchange, but it will not form a full reaction. 6) 2NH4OH + BaCl2 2NH4Cl + Ba(OH)2(^) Excess barium hydroxide will precipitate. 7) Ca(NO3)2 + Na2SO4 CaSO4(^) + 2NaNO3 CaSO4 is insoluble and will… [cont.]
Answered by kumorifox - Mon Aug 18 11:39:59 2008
there is a few question i need help in my chemistry.?
Q. can anyone tell me the name of the chemical listed below? Fe - ? CaO - ? MgO - ? H2SO4 - ? HNO3 - ? HCL - ? NaOH - ? KOH - ? AgNO3 - ? KIO - ? NH4Cl - ? BaCl2 - ? HFO - ? And 1 more question is that what is lonic bond and coralent bond.
Asked by Hua Cu P - Mon Jan 8 08:42:24 2007 - - 5 Answers - 0 Comments
A. Fe - Iron CaO - Calcium oxide MgO - Magnesium oxide H2SO4 - Sulphuric Acid HNO3 - Nitric Acid HCL - Hydrochloric acid / Hydrogen chloride NaOH - Sodium hydroxide KOH - Potassium hydroxide AgNO3 - Silver nitrate KlO - Potassium hypoiodite NH4Cl - Ammonium Chloride BaCl2 - Barium chloride HFO - Hydrogen hypofluorite Covalent bond is a chemical bond between two atoms or radicals formed by the sharing of a pair (single bond), two pairs (double bond), or three pairs of electrons (triple bond). Ionic Bond is the force of attraction between ions which hold the respective ions together. Ionic bond is a chemical bond formed by electrostatic attraction between oppositely charged ions
Answered by Som - Mon Jan 8 09:20:48 2007
Q. can anyone tell me the name of the chemical listed below? Fe - ? CaO - ? MgO - ? H2SO4 - ? HNO3 - ? HCL - ? NaOH - ? KOH - ? AgNO3 - ? KIO - ? NH4Cl - ? BaCl2 - ? HFO - ? And 1 more question is that what is lonic bond and coralent bond.
Asked by Hua Cu P - Mon Jan 8 08:42:24 2007 - - 5 Answers - 0 Comments
A. Fe - Iron CaO - Calcium oxide MgO - Magnesium oxide H2SO4 - Sulphuric Acid HNO3 - Nitric Acid HCL - Hydrochloric acid / Hydrogen chloride NaOH - Sodium hydroxide KOH - Potassium hydroxide AgNO3 - Silver nitrate KlO - Potassium hypoiodite NH4Cl - Ammonium Chloride BaCl2 - Barium chloride HFO - Hydrogen hypofluorite Covalent bond is a chemical bond between two atoms or radicals formed by the sharing of a pair (single bond), two pairs (double bond), or three pairs of electrons (triple bond). Ionic Bond is the force of attraction between ions which hold the respective ions together. Ionic bond is a chemical bond formed by electrostatic attraction between oppositely charged ions
Answered by Som - Mon Jan 8 09:20:48 2007
Which chemical tests can be used to distinguish between the following pairs of substance??
Q. Which chemical test can be used to distinguish between the following pairs of substances listed? (Observations) >>assume substances are solid, unless stated otherwise.. -ZnO and FeO -Mg(OH)2 and Zn(OH)2 -Al(OH)3 and SiO2 -Na2CO3 and NaNO3 -AgNO3 and NH4Cl -Concentrated HNO3 and concentrated H2SO4 -ethanol, 2-methyl-2-propanol -H2O2 and H2O -NaCl and NH4Cl -NaCl and NaI -Butanal and Butanone -Zn and Fe -FeSO4 and MgSO4 -NH3(aq) and NaOH(aq) -Cl2(aq) and F2(aq) -NaCl and MgCl2 -KOH and Ba(OH)2 -Mg(NO3)2 and Pb(NO3)3 -NH3(g) and HCl(g) -NaCl and NaBr -Hexane and 1-hexanol -2-hexanol and 2-methyl-2-hexanol -sodium oxalate (Na2C2O4) and FeSO4 -distilled water and tap water -Al(OH)3 and Zn(OH)2 -Na2O and P4O10 -Cu and… [cont.]
Asked by hello =] - Wed Apr 30 04:30:42 2008 - - 3 Answers - 0 Comments
A. Too many! Here are a few... -AgNO3 and NH4Cl - white ppt with KCl for AgNO3 -Concentrated HNO3 and concentrated H2SO4 - Blue solution if you add Copper to H2SO4 -H2O2 and H2O - anhyrdous cobalt chloride paper goes blue to white with water. -NaCl and NaI - NaCl no reaction with Cl2(aq) other will get brown clour -Butanal and Butanone - silver mirror test -NaCl and NaBr - NaCl no reaction with Cl2(aq) other will get brown clour -distilled water and tap water - (pH7 for distilled) -Cu and Au - Cu will react with H2SO4 to give blue solution
Answered by Mrs P - Wed Apr 30 05:17:16 2008
Q. Which chemical test can be used to distinguish between the following pairs of substances listed? (Observations) >>assume substances are solid, unless stated otherwise.. -ZnO and FeO -Mg(OH)2 and Zn(OH)2 -Al(OH)3 and SiO2 -Na2CO3 and NaNO3 -AgNO3 and NH4Cl -Concentrated HNO3 and concentrated H2SO4 -ethanol, 2-methyl-2-propanol -H2O2 and H2O -NaCl and NH4Cl -NaCl and NaI -Butanal and Butanone -Zn and Fe -FeSO4 and MgSO4 -NH3(aq) and NaOH(aq) -Cl2(aq) and F2(aq) -NaCl and MgCl2 -KOH and Ba(OH)2 -Mg(NO3)2 and Pb(NO3)3 -NH3(g) and HCl(g) -NaCl and NaBr -Hexane and 1-hexanol -2-hexanol and 2-methyl-2-hexanol -sodium oxalate (Na2C2O4) and FeSO4 -distilled water and tap water -Al(OH)3 and Zn(OH)2 -Na2O and P4O10 -Cu and… [cont.]
Asked by hello =] - Wed Apr 30 04:30:42 2008 - - 3 Answers - 0 Comments
A. Too many! Here are a few... -AgNO3 and NH4Cl - white ppt with KCl for AgNO3 -Concentrated HNO3 and concentrated H2SO4 - Blue solution if you add Copper to H2SO4 -H2O2 and H2O - anhyrdous cobalt chloride paper goes blue to white with water. -NaCl and NaI - NaCl no reaction with Cl2(aq) other will get brown clour -Butanal and Butanone - silver mirror test -NaCl and NaBr - NaCl no reaction with Cl2(aq) other will get brown clour -distilled water and tap water - (pH7 for distilled) -Cu and Au - Cu will react with H2SO4 to give blue solution
Answered by Mrs P - Wed Apr 30 05:17:16 2008
Qualitative Analysis of 8 Salts?
Q. I have 8 unknown salts: Na3PO4 KNO3 CaCO3 NH4Cl Mg(OH)2 Na2SO4 ZnCl2 Pb(NO3)2 I have to discover which salt is which using water, test tubes and only two of the following reagents: 6M H2SO4, 6M HCl, 6M AgNO3 and phenolphthalein indicator. Can anyone please help on how to do this i have no idea where to even start?
Asked by Jonathon M - Mon Mar 9 15:14:58 2009 - - 1 Answers - 0 Comments
A. Hydroxides are basic, which mean they will turn purple with teh phenolphthalein indicator. Hope that's a start. (:
Answered by [+SeasonalTNT] - Mon Mar 9 15:37:28 2009
Q. I have 8 unknown salts: Na3PO4 KNO3 CaCO3 NH4Cl Mg(OH)2 Na2SO4 ZnCl2 Pb(NO3)2 I have to discover which salt is which using water, test tubes and only two of the following reagents: 6M H2SO4, 6M HCl, 6M AgNO3 and phenolphthalein indicator. Can anyone please help on how to do this i have no idea where to even start?
Asked by Jonathon M - Mon Mar 9 15:14:58 2009 - - 1 Answers - 0 Comments
A. Hydroxides are basic, which mean they will turn purple with teh phenolphthalein indicator. Hope that's a start. (:
Answered by [+SeasonalTNT] - Mon Mar 9 15:37:28 2009
Can anyone help me with chemistry?
Q. Could you tell me if these answers are correct? If not, could you please correct me? 1. C 2. C 3. B 4. A 5. B 6. C 7. B 8. A 9. C 1. Which compounds are both classified as electrolytes? a) C6H12O6 and CH3OH b) KCl and CH3OH **c) NH4Cl and KCl** d) NH4Cl and C6H12O6 2. In the reaction H2O + CO3^2- <---> OH- + HCO3-, the two Bronsted-Lowry acids are a) CO3^2- and OH- b) H2O and OH- **c) CO3^2- and HCO3-** d) H2O and HCO3- 3. Which equation illustrates the amphiprotic propertis of a reactant species? a) H2O(l) + H2O(l) ---> H3O+(aq) + OH-(aq) **b) NH3(aq) + H2O(l) ---> NH4+(aq) + OH-(aq)** c) HCl(aq) + H2O(l) ---> H3O+(aq) + Cl-(aq) d) 2H2(g) + O2(g) ---> 2H2O(l) 4. In a titration experiment, 20. milliliters of 1.0 M HCl neutralized 10.… [cont.]
Asked by Hayleigh - Thu May 28 16:50:25 2009 - - 2 Answers - 0 Comments
Q. Could you tell me if these answers are correct? If not, could you please correct me? 1. C 2. C 3. B 4. A 5. B 6. C 7. B 8. A 9. C 1. Which compounds are both classified as electrolytes? a) C6H12O6 and CH3OH b) KCl and CH3OH **c) NH4Cl and KCl** d) NH4Cl and C6H12O6 2. In the reaction H2O + CO3^2- <---> OH- + HCO3-, the two Bronsted-Lowry acids are a) CO3^2- and OH- b) H2O and OH- **c) CO3^2- and HCO3-** d) H2O and HCO3- 3. Which equation illustrates the amphiprotic propertis of a reactant species? a) H2O(l) + H2O(l) ---> H3O+(aq) + OH-(aq) **b) NH3(aq) + H2O(l) ---> NH4+(aq) + OH-(aq)** c) HCl(aq) + H2O(l) ---> H3O+(aq) + Cl-(aq) d) 2H2(g) + O2(g) ---> 2H2O(l) 4. In a titration experiment, 20. milliliters of 1.0 M HCl neutralized 10.… [cont.]
Asked by Hayleigh - Thu May 28 16:50:25 2009 - - 2 Answers - 0 Comments
Calculate the grams of solute in each of the following solutions??ex17?
Q. 1.82 L of 0.274 M BaCl2 g?? 83.2 mL of 0.300 M H2SO4 g?? 41.7 g of 0.489 M NH4Cl g??
Asked by none - Sat Apr 19 13:57:04 2008 - - 1 Answers - 0 Comments
A. Moles BaCl2 = 1.82 x 0.274 = 0.499 Mass = 0.499 mol x 208.2 g/mol = 103.9 g Moles H2SO4 = 0.0832 L x 0.300 =0.0250 Mass = 0.0250 mol x 98 g/mol =2.45 g Moles NH4Cl = 41.7 g / 53.453 = 0.780 V = 0.780 / 0.489 M = 1.59 L
Answered by Dr.A - Sat Apr 19 15:38:32 2008
Q. 1.82 L of 0.274 M BaCl2 g?? 83.2 mL of 0.300 M H2SO4 g?? 41.7 g of 0.489 M NH4Cl g??
Asked by none - Sat Apr 19 13:57:04 2008 - - 1 Answers - 0 Comments
A. Moles BaCl2 = 1.82 x 0.274 = 0.499 Mass = 0.499 mol x 208.2 g/mol = 103.9 g Moles H2SO4 = 0.0832 L x 0.300 =0.0250 Mass = 0.0250 mol x 98 g/mol =2.45 g Moles NH4Cl = 41.7 g / 53.453 = 0.780 V = 0.780 / 0.489 M = 1.59 L
Answered by Dr.A - Sat Apr 19 15:38:32 2008
Balance the following equations. [I have not done this before please try and explain the first one only]?
Q. 1) Al+HCI=AlCl3+H2, 2) KOH + Cl2=KClO3+KCl+H20, 3) Ca3(PO4)2+H2SO4=Ca(H2PO4) 2+CaSO4 4) Cl2+NH3=N2+NH4Cl 5) KMnO4+HCl=KCl+MnCl2+H2O+C l2 6) FeS2+O2=Fe2O3+SO2 7) C+HNO3=H2O+NO2+CO2 8) Pb3O4+HCl=PbCl2+H2O+Cl2 9) NH3+O2=NO+H2O
Asked by Abby G - Tue May 5 13:01:57 2009 - - 3 Answers - 0 Comments
A. You've just got to get each element at equal amounts on both sides by balancing the compounds. number 1) first I would multiply HCl by 2 I see that that give me 2Cl on the left, but 3 Cl on the right, so I multiply HCl by another 3 Now Ive got Al + 6HCl => AlCl3 + H2 I need to 6 Cl's and 6 H's on the right side, so I multiply AlCl3 by 2 and H2 by 3. Then just multiply Al by 2 to get it even and you have... 2Al + 6HCl => 2AlCl3 +3H2 (if you add up each element you will see that each side contain equal amounts, thus the equation is balanced.
Answered by Mike M. - Tue May 5 13:11:35 2009
Q. 1) Al+HCI=AlCl3+H2, 2) KOH + Cl2=KClO3+KCl+H20, 3) Ca3(PO4)2+H2SO4=Ca(H2PO4) 2+CaSO4 4) Cl2+NH3=N2+NH4Cl 5) KMnO4+HCl=KCl+MnCl2+H2O+C l2 6) FeS2+O2=Fe2O3+SO2 7) C+HNO3=H2O+NO2+CO2 8) Pb3O4+HCl=PbCl2+H2O+Cl2 9) NH3+O2=NO+H2O
Asked by Abby G - Tue May 5 13:01:57 2009 - - 3 Answers - 0 Comments
A. You've just got to get each element at equal amounts on both sides by balancing the compounds. number 1) first I would multiply HCl by 2 I see that that give me 2Cl on the left, but 3 Cl on the right, so I multiply HCl by another 3 Now Ive got Al + 6HCl => AlCl3 + H2 I need to 6 Cl's and 6 H's on the right side, so I multiply AlCl3 by 2 and H2 by 3. Then just multiply Al by 2 to get it even and you have... 2Al + 6HCl => 2AlCl3 +3H2 (if you add up each element you will see that each side contain equal amounts, thus the equation is balanced.
Answered by Mike M. - Tue May 5 13:11:35 2009
Balancing equations??
Q. 1. NH3 + H2SO4 --> (NH4)2SO4 2. HCl+ NH3 --> NH4Cl
Asked by cutefugigirl - Sat Feb 10 16:16:01 2007 - - 5 Answers - 0 Comments
A. In balancing equations you are simply trying to make sure that there is the same number of atoms of each element on each side of the equation. If you know what is happining in the equation, it is easier, but this isn't necessarily feasible for someone who has little chemical background. To do it mathematically, the best way is to look at the most complex molecule (in both cases here, the product). How many atoms of each element are present? #1: The product contains 2N, 8H, 1S, 4O atoms. The first reactant contains 1N, 3H atoms. The second reactant contains 2H, 1S, 4O atoms. Now note that the only element that is in both reactants is H. Thus you can try picking coefficients to match the other elements to the products. There are twice as… [cont.]
Answered by Arrik - Sat Feb 10 16:35:39 2007
Q. 1. NH3 + H2SO4 --> (NH4)2SO4 2. HCl+ NH3 --> NH4Cl
Asked by cutefugigirl - Sat Feb 10 16:16:01 2007 - - 5 Answers - 0 Comments
A. In balancing equations you are simply trying to make sure that there is the same number of atoms of each element on each side of the equation. If you know what is happining in the equation, it is easier, but this isn't necessarily feasible for someone who has little chemical background. To do it mathematically, the best way is to look at the most complex molecule (in both cases here, the product). How many atoms of each element are present? #1: The product contains 2N, 8H, 1S, 4O atoms. The first reactant contains 1N, 3H atoms. The second reactant contains 2H, 1S, 4O atoms. Now note that the only element that is in both reactants is H. Thus you can try picking coefficients to match the other elements to the products. There are twice as… [cont.]
Answered by Arrik - Sat Feb 10 16:35:39 2007
help! how do you balance these?
Q. FeCl3+(NH4)2S yields Fe2S3+NH4Cl C5H12=O2 yields CO2 +H2O KOH+H2SO4 yields K2SO4 + H2O i really need help *oh and the numbers are suppose to be the little ones* please balance them
Asked by Momo - Thu Nov 12 20:42:04 2009 - - 1 Answers - 0 Comments
Q. FeCl3+(NH4)2S yields Fe2S3+NH4Cl C5H12=O2 yields CO2 +H2O KOH+H2SO4 yields K2SO4 + H2O i really need help *oh and the numbers are suppose to be the little ones* please balance them
Asked by Momo - Thu Nov 12 20:42:04 2009 - - 1 Answers - 0 Comments
chem 101 help help help!!! answer as many as you can help with<3?
Q. CuSO4 + H2SO4= what??? Na2CO3 + CaCl2 = CuSO43 + Zn(NO3)2= CuSO4 + NH4Cl = FeCl3 + NH4OH=
Asked by diZzy420 - Mon Mar 10 11:37:04 2008 - - 3 Answers - 0 Comments
A. CuSO4 + H2SO4= would not react (buffer solution) Na2CO3 + CaCl2 = 2 NaCl + CaCO3 CuSO43* + Zn(NO3)2= (*typo in question?) CuSO4 + 2 NH4Cl = CuCl2 + (NH4)2SO4 FeCl3 + 3 NH4OH= 3 NH4Cl + Fe(OH)3
Answered by jediman41 - Mon Mar 10 11:53:29 2008
Q. CuSO4 + H2SO4= what??? Na2CO3 + CaCl2 = CuSO43 + Zn(NO3)2= CuSO4 + NH4Cl = FeCl3 + NH4OH=
Asked by diZzy420 - Mon Mar 10 11:37:04 2008 - - 3 Answers - 0 Comments
A. CuSO4 + H2SO4= would not react (buffer solution) Na2CO3 + CaCl2 = 2 NaCl + CaCO3 CuSO43* + Zn(NO3)2= (*typo in question?) CuSO4 + 2 NH4Cl = CuCl2 + (NH4)2SO4 FeCl3 + 3 NH4OH= 3 NH4Cl + Fe(OH)3
Answered by jediman41 - Mon Mar 10 11:53:29 2008
From Yahoo Answer Search: 'NH4Cl H2SO4 ='
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