How do you draw dot and cross diagrams for a) BH3 b)PF5 c) ClF3 d)SO3?
Q. Could you just describe how they will look like. For example, I know SO3 is meant to form 3 double bonds, but this would give sulphur 12 electrons in its outer shell, whereas it is only meant to have 8...
Asked by SB1 - Thu Nov 27 14:50:09 2008 - - 1 Answers - 0 Comments
A. BH3 has 3 bonded pairs of electrons around the boron. It would serve as a Lewis acid, since it could accept one more pair. (sp in hybrid theory) PF5 has 5 bonded pairs of electrons around the phosphorus. It has an expanded valance shell. (sp d) SO3 has a bonded pair of electrons between the sulphur and each of the oxygens. (sp ) It also has a pair of electrons spread out or delocalized over all three pairs. Sulphur has 8 electrons as expected, but the bonds are about 1 order.
Answered by paul1 - Thu Nov 27 15:07:21 2008
Q. Could you just describe how they will look like. For example, I know SO3 is meant to form 3 double bonds, but this would give sulphur 12 electrons in its outer shell, whereas it is only meant to have 8...
Asked by SB1 - Thu Nov 27 14:50:09 2008 - - 1 Answers - 0 Comments
A. BH3 has 3 bonded pairs of electrons around the boron. It would serve as a Lewis acid, since it could accept one more pair. (sp in hybrid theory) PF5 has 5 bonded pairs of electrons around the phosphorus. It has an expanded valance shell. (sp d) SO3 has a bonded pair of electrons between the sulphur and each of the oxygens. (sp ) It also has a pair of electrons spread out or delocalized over all three pairs. Sulphur has 8 electrons as expected, but the bonds are about 1 order.
Answered by paul1 - Thu Nov 27 15:07:21 2008
What is value of Kp for dissociation of SO3 at 900K?
Q. The equilibrium condition for SO2(g), O2(g), and SO3(g) is important in sulfuric acid production. When a 0.0100-mole sample of SO3 is introduced into an evacuated 1.30 L vessel at 900K, 0.0245 mole SO3 is found to be present at equilibrium. What is the value of Kp for the dissociation of SO3(g) at 900K.
Asked by apple1234 - Sat Jun 28 13:16:37 2008 - - 1 Answers - 0 Comments
A. There is a typo in the question. Since some sulfur trioxide reacts away till equilibrium is established, the amount in equilibrium must be smaller than initial amount. With corrected values the calculation would be as follows. 1. calculate the amount of of SO which has reacted away: n(SO ) = n(SO )_initial - n(SO )_equilibrium 2. calculate amount of sulfur dioxide and oxygen. Dissociation reaction is given by: SO (g) SO + (1/2) O So one mole of SO and one half mole of O is formed per mole of SO reacted away. Hence: n(SO )_equilibrium = n(SO ) n(O )_equilibrium = (1/2) n(SO ) 3. Calculate equilibrium partial pressures. Assuming ideal gas mixture partial pressures are given by p(i) = n(i) R T/V (R universal gas constant, T… [cont.]
Answered by schmiso - Sat Jun 28 13:41:24 2008
Q. The equilibrium condition for SO2(g), O2(g), and SO3(g) is important in sulfuric acid production. When a 0.0100-mole sample of SO3 is introduced into an evacuated 1.30 L vessel at 900K, 0.0245 mole SO3 is found to be present at equilibrium. What is the value of Kp for the dissociation of SO3(g) at 900K.
Asked by apple1234 - Sat Jun 28 13:16:37 2008 - - 1 Answers - 0 Comments
A. There is a typo in the question. Since some sulfur trioxide reacts away till equilibrium is established, the amount in equilibrium must be smaller than initial amount. With corrected values the calculation would be as follows. 1. calculate the amount of of SO which has reacted away: n(SO ) = n(SO )_initial - n(SO )_equilibrium 2. calculate amount of sulfur dioxide and oxygen. Dissociation reaction is given by: SO (g) SO + (1/2) O So one mole of SO and one half mole of O is formed per mole of SO reacted away. Hence: n(SO )_equilibrium = n(SO ) n(O )_equilibrium = (1/2) n(SO ) 3. Calculate equilibrium partial pressures. Assuming ideal gas mixture partial pressures are given by p(i) = n(i) R T/V (R universal gas constant, T… [cont.]
Answered by schmiso - Sat Jun 28 13:41:24 2008
How to draw lewis structure for SO3?
Q. Can u draw the lewis structure for SO3 and explain why you drew that way?
Asked by hohihohi - Wed Dec 17 23:37:30 2008 - - 1 Answers - 0 Comments
A. Check out this image: The S molecule has 4 bonds but only 3 are needed to connect them to all the O atoms. The left over bond will be a part of double bond with one of the O atoms. This bond is continually changing location between the three O atoms.
Answered by Cafm - Fri Dec 19 06:22:03 2008
Q. Can u draw the lewis structure for SO3 and explain why you drew that way?
Asked by hohihohi - Wed Dec 17 23:37:30 2008 - - 1 Answers - 0 Comments
A. Check out this image: The S molecule has 4 bonds but only 3 are needed to connect them to all the O atoms. The left over bond will be a part of double bond with one of the O atoms. This bond is continually changing location between the three O atoms.
Answered by Cafm - Fri Dec 19 06:22:03 2008
How do you draw a lewis dot diagram of SO3?
Q. The Internet told me there are double bonds between the S and each O. That works for O because it has 4 electrons bonded with the S and 4 left over, making it have 8, which is satisfying. However, the double bonds allow the S to have 12 electrons in its shell. How does that work?
Asked by Ant - Sun Jul 19 00:40:04 2009 - - 2 Answers - 0 Comments
A. Line drawings of molecular structures are just symbolic methods we use to understand more complex matters of chemical bonding and they are meant to crudely represent the distribution of valence electron density. Personally, I would prefer that we don't confuse beginners with octet rule violations - SO can be perfectly well represented with Lewis diagrams like those for carbonate or nitrate - which are isoelectronic - we just add formal charges. However, it is now conventional to allow sulfur to violate the "octet" rule by "making use" of its unoccupied 3d orbitals. This is now taught to introductory students as though it had a sound basis. It doesn't really have a very sound basis, but once freshman chemistry textbooks get a hold of… [cont.]
Answered by unknown - Sun Jul 19 00:57:20 2009
Q. The Internet told me there are double bonds between the S and each O. That works for O because it has 4 electrons bonded with the S and 4 left over, making it have 8, which is satisfying. However, the double bonds allow the S to have 12 electrons in its shell. How does that work?
Asked by Ant - Sun Jul 19 00:40:04 2009 - - 2 Answers - 0 Comments
A. Line drawings of molecular structures are just symbolic methods we use to understand more complex matters of chemical bonding and they are meant to crudely represent the distribution of valence electron density. Personally, I would prefer that we don't confuse beginners with octet rule violations - SO can be perfectly well represented with Lewis diagrams like those for carbonate or nitrate - which are isoelectronic - we just add formal charges. However, it is now conventional to allow sulfur to violate the "octet" rule by "making use" of its unoccupied 3d orbitals. This is now taught to introductory students as though it had a sound basis. It doesn't really have a very sound basis, but once freshman chemistry textbooks get a hold of… [cont.]
Answered by unknown - Sun Jul 19 00:57:20 2009
how many moles of SO3 are produced from the complete reaction of 3.44 moles of SO2 ?
Q. For the reaction SO2 + O2 SO3 how many moles of SO3 are produced from the complete reaction of 3.44 moles of SO2 ? Enter a numeric answer only, no units.
Asked by Dani - Tue Nov 13 15:48:53 2007 - - 1 Answers - 0 Comments
A. 3.44
Answered by petey1114 - Tue Nov 13 15:59:12 2007
Q. For the reaction SO2 + O2 SO3 how many moles of SO3 are produced from the complete reaction of 3.44 moles of SO2 ? Enter a numeric answer only, no units.
Asked by Dani - Tue Nov 13 15:48:53 2007 - - 1 Answers - 0 Comments
A. 3.44
Answered by petey1114 - Tue Nov 13 15:59:12 2007
How could one produce Sulfur trioxide (SO3) in a high school Lab?
Q. I found this method on wiki 1. Dehydration at 315 C: 2 NaHSO4 Na2S2O7 + H2O 2. Cracking at 460 C: Na2S2O7 Na2SO4 + SO3 Although i don't how i could set this up in the lab please help smart people
Asked by mega ultra chicken - Wed May 20 03:25:35 2009 - - 2 Answers - 0 Comments
A. \m/ Metal Conor, just Metal \m/
Answered by inversed_day - Fri May 22 02:30:15 2009
Q. I found this method on wiki 1. Dehydration at 315 C: 2 NaHSO4 Na2S2O7 + H2O 2. Cracking at 460 C: Na2S2O7 Na2SO4 + SO3 Although i don't how i could set this up in the lab please help smart people
Asked by mega ultra chicken - Wed May 20 03:25:35 2009 - - 2 Answers - 0 Comments
A. \m/ Metal Conor, just Metal \m/
Answered by inversed_day - Fri May 22 02:30:15 2009
why does so3 have a higher boiling point than so2?
Q. I thought it would have a lower boiling point since it is held to together by london dispersion forces, which are weaker than so2's dipole-dipole attractions. Is all of this correct? 10 pts for the best answer.
Asked by Jack Spicer - Thu Dec 20 22:53:37 2007 - - 1 Answers - 0 Comments
A. Could it be that the molecule is heavier therefore requiring larger amount of energy to make the molecules move fast enough to break free from liquid form? Hope it helps.
Answered by buncer1 - Fri Dec 21 00:11:42 2007
Q. I thought it would have a lower boiling point since it is held to together by london dispersion forces, which are weaker than so2's dipole-dipole attractions. Is all of this correct? 10 pts for the best answer.
Asked by Jack Spicer - Thu Dec 20 22:53:37 2007 - - 1 Answers - 0 Comments
A. Could it be that the molecule is heavier therefore requiring larger amount of energy to make the molecules move fast enough to break free from liquid form? Hope it helps.
Answered by buncer1 - Fri Dec 21 00:11:42 2007
Why are there only four resonance structures for SO3, sulfur trioxide?
Q. I know there are three resonance structures with a single double bond to one of the oxygens. I know there's one additional structure with an expanded octet on the sulfur. The sulfur has three double bonds, one to each oxygen. Why can't you have another three resonance structures, with two double bonds to the oxygens, and one single bond to the remaining oxygen? I think the formal charge comes out OK.
Asked by ralph99 - Sun Oct 28 02:32:14 2007 - - 1 Answers - 1 Comments
A. Resonance structures are just there for reference. No one knows the true structures of molecules at any given moment. These structures help approximate where the electron densities are in a molecule. The electrons are always moving around and you cant consider a double bond to always be there between a specific sulfur and oxygen, they are just reference materials. Formal charge again is reference. A +1 does not mean a +1 charge on the atom. Charge is spread out across a region not an atom.
Answered by ct741358 - Sun Oct 28 02:56:40 2007
Q. I know there are three resonance structures with a single double bond to one of the oxygens. I know there's one additional structure with an expanded octet on the sulfur. The sulfur has three double bonds, one to each oxygen. Why can't you have another three resonance structures, with two double bonds to the oxygens, and one single bond to the remaining oxygen? I think the formal charge comes out OK.
Asked by ralph99 - Sun Oct 28 02:32:14 2007 - - 1 Answers - 1 Comments
A. Resonance structures are just there for reference. No one knows the true structures of molecules at any given moment. These structures help approximate where the electron densities are in a molecule. The electrons are always moving around and you cant consider a double bond to always be there between a specific sulfur and oxygen, they are just reference materials. Formal charge again is reference. A +1 does not mean a +1 charge on the atom. Charge is spread out across a region not an atom.
Answered by ct741358 - Sun Oct 28 02:56:40 2007
draw structural formulae showing covalent bonding and shapes for the two oxides of sulphur SO2 and SO3?
Q. (little 2 & 3 under SOs.) assuming this is possible on a computer!
Asked by blacky - Fri Jul 31 06:50:55 2009 - - 2 Answers - 0 Comments
A. You will realise the impracticability of drawing such molecules here. If you check Wikipedia, you will see both molecules very nicely drawn for you. SO2 is a planar molecule, bent like a boomerang, angle of the S-O-S molecule is 119 and bond length 143.1pm. Gaseous SO3 is a trigonal planar molecule. The above data courtesy of Wiki. Just look.
Answered by Trevor H - Fri Jul 31 07:06:58 2009
Q. (little 2 & 3 under SOs.) assuming this is possible on a computer!
Asked by blacky - Fri Jul 31 06:50:55 2009 - - 2 Answers - 0 Comments
A. You will realise the impracticability of drawing such molecules here. If you check Wikipedia, you will see both molecules very nicely drawn for you. SO2 is a planar molecule, bent like a boomerang, angle of the S-O-S molecule is 119 and bond length 143.1pm. Gaseous SO3 is a trigonal planar molecule. The above data courtesy of Wiki. Just look.
Answered by Trevor H - Fri Jul 31 07:06:58 2009
What is the difference between SO3 and SO3+2?
Q. Both of the 3's are subscript. The +2 is superscript.
Asked by vmarsh3 - Thu Dec 22 01:35:23 2005 - - 2 Answers - 0 Comments
A. SO3+2 clearly is an error. It would demand a +8 charge of the sulfur atom (or a stable positive sulfur ion with an isolated peroxide ligand), which is impossible. A superscript "2-" would indicate a sulfite ion, whereas SO3 is sulfur trioxide, a neutral molecule forming a gas at room temperature.
Answered by jorganos - Thu Dec 22 08:05:08 2005
Q. Both of the 3's are subscript. The +2 is superscript.
Asked by vmarsh3 - Thu Dec 22 01:35:23 2005 - - 2 Answers - 0 Comments
A. SO3+2 clearly is an error. It would demand a +8 charge of the sulfur atom (or a stable positive sulfur ion with an isolated peroxide ligand), which is impossible. A superscript "2-" would indicate a sulfite ion, whereas SO3 is sulfur trioxide, a neutral molecule forming a gas at room temperature.
Answered by jorganos - Thu Dec 22 08:05:08 2005
In the following reaction, what is the effect on the direction of the reaction if more SO3 is added?
Q. 2SO2 + O2 = 2SO3 a.The position of the equilibrium remains unchanged. b. The catalyst for the reaction is used up c. The equilibrium shifts to produce more reactants. d. The rate of formation of products is increased. e. The equilibrium shifts to produce more products. I picked "E" and got it wrong, but maybe it is "C" please help!
Asked by peosu04 - Wed Apr 16 14:36:36 2008 - - 3 Answers - 0 Comments
A. It is c. The equilibrium shifts to produce more reactants (Le Chatelier's principle)
Answered by Dr.A - Wed Apr 16 14:41:05 2008
Q. 2SO2 + O2 = 2SO3 a.The position of the equilibrium remains unchanged. b. The catalyst for the reaction is used up c. The equilibrium shifts to produce more reactants. d. The rate of formation of products is increased. e. The equilibrium shifts to produce more products. I picked "E" and got it wrong, but maybe it is "C" please help!
Asked by peosu04 - Wed Apr 16 14:36:36 2008 - - 3 Answers - 0 Comments
A. It is c. The equilibrium shifts to produce more reactants (Le Chatelier's principle)
Answered by Dr.A - Wed Apr 16 14:41:05 2008
Can someone help me with a replacement for the Yamaha SO3?
Q. I found out recently that Yamaha has discontinued the model above. Do Roland, Korg or Juno make anything comparable?
Asked by dgxkeyboardist - Wed Sep 17 03:32:04 2008 - - 1 Answers - 0 Comments
A. The Yamaha MM6 is what Yamaha is now making that seems to be an upgrade from the SO3. Another you might also want to look at is the Roland Juno-D. Hope this has helped... if I find out any other info, I will edit this post.
Answered by pooryorrick - Wed Sep 17 07:17:59 2008
Q. I found out recently that Yamaha has discontinued the model above. Do Roland, Korg or Juno make anything comparable?
Asked by dgxkeyboardist - Wed Sep 17 03:32:04 2008 - - 1 Answers - 0 Comments
A. The Yamaha MM6 is what Yamaha is now making that seems to be an upgrade from the SO3. Another you might also want to look at is the Roland Juno-D. Hope this has helped... if I find out any other info, I will edit this post.
Answered by pooryorrick - Wed Sep 17 07:17:59 2008
How To Calculate the number of S Atoms in 7.25 moles of SO3 ?
Q. Hi, how do I calculate the number of Sulfur atoms in 7.25 moles of SO3??? I'm stuck on a problem on my homework... Thanks!
Asked by moparmn - Fri Oct 10 18:00:15 2008 - - 4 Answers - 0 Comments
A. I'm sure you'll get a rush of answers but anyway one mole of any substance contains 6.022x10^23 molecules (or atoms if a monatomic element). SO3 contains just one sulphur atom per molecule so in fact the number of sulphur atoms in 7.25 moles is 6.022x10^23 x 1 x 7.25 which is 4.37x10^24.
Answered by Professor Moose - Fri Oct 10 18:06:13 2008
Q. Hi, how do I calculate the number of Sulfur atoms in 7.25 moles of SO3??? I'm stuck on a problem on my homework... Thanks!
Asked by moparmn - Fri Oct 10 18:00:15 2008 - - 4 Answers - 0 Comments
A. I'm sure you'll get a rush of answers but anyway one mole of any substance contains 6.022x10^23 molecules (or atoms if a monatomic element). SO3 contains just one sulphur atom per molecule so in fact the number of sulphur atoms in 7.25 moles is 6.022x10^23 x 1 x 7.25 which is 4.37x10^24.
Answered by Professor Moose - Fri Oct 10 18:06:13 2008
How many moles of SO3 are in 2.4 x 1024 molecules of SO3? ?
Q. How many moles of SO3 are in 2.4 x 1024 molecules of SO3?
Asked by alabamian_girl - Wed Nov 12 23:30:44 2008 - - 1 Answers - 0 Comments
A. If that's suppose to be 2.4 10 , remember that a mole is just a number, like a dozen. So divide that number by 6.02 10
Answered by dustin_barr - Wed Nov 12 23:57:51 2008
Q. How many moles of SO3 are in 2.4 x 1024 molecules of SO3?
Asked by alabamian_girl - Wed Nov 12 23:30:44 2008 - - 1 Answers - 0 Comments
A. If that's suppose to be 2.4 10 , remember that a mole is just a number, like a dozen. So divide that number by 6.02 10
Answered by dustin_barr - Wed Nov 12 23:57:51 2008
In symbol equations in Chemistry, I don't understand, what do symbols like SO3 '2-' mean?
Q. I do not understand the bit where it says the number and then a - after it.
Asked by John - Fri May 29 14:25:27 2009 - - 3 Answers - 0 Comments
A. That is the overall charge on the species. You have a central S atom, with 3 O bonded to it, and overall there are 2 extra electrons in the system. A similar thing with a + indictates a lack of electrons.
Answered by rowerboy - Fri May 29 14:32:23 2009
Q. I do not understand the bit where it says the number and then a - after it.
Asked by John - Fri May 29 14:25:27 2009 - - 3 Answers - 0 Comments
A. That is the overall charge on the species. You have a central S atom, with 3 O bonded to it, and overall there are 2 extra electrons in the system. A similar thing with a + indictates a lack of electrons.
Answered by rowerboy - Fri May 29 14:32:23 2009
How can SO3 have 3 double bonds?
Q. I know that S has 6 electrons in the valence shell (in 3s and 3p) but how can it double bond bond with 3 Os with a valency of 2 (in 2p)?? Please explain thoroughly.
Asked by Indika - Mon Aug 31 07:09:03 2009 - - 4 Answers - 0 Comments
A. Hmm interesting it may involve co-ordinate covalent bond/s that would be my only guess.
Answered by greengoop2008 - Mon Aug 31 07:37:50 2009
Q. I know that S has 6 electrons in the valence shell (in 3s and 3p) but how can it double bond bond with 3 Os with a valency of 2 (in 2p)?? Please explain thoroughly.
Asked by Indika - Mon Aug 31 07:09:03 2009 - - 4 Answers - 0 Comments
A. Hmm interesting it may involve co-ordinate covalent bond/s that would be my only guess.
Answered by greengoop2008 - Mon Aug 31 07:37:50 2009
Why is it that SO3 and SO4 both have a charge of -2?
Q. At first I thought this was a missprint in my Chem 1 book...but I confirmed online that SO3 and SO4 both have a charge of -2. If somone could explain why to me I'd appreciate it.
Asked by Aaron S - Sun Sep 30 11:24:58 2007 - - 1 Answers - 0 Comments
A. The sulfur is in a different oxidation state in the two ions
Answered by Mike W - Sun Sep 30 11:59:34 2007
Q. At first I thought this was a missprint in my Chem 1 book...but I confirmed online that SO3 and SO4 both have a charge of -2. If somone could explain why to me I'd appreciate it.
Asked by Aaron S - Sun Sep 30 11:24:58 2007 - - 1 Answers - 0 Comments
A. The sulfur is in a different oxidation state in the two ions
Answered by Mike W - Sun Sep 30 11:59:34 2007
What is the lewis structure for ClO4 and SO3-2?
Q. But wouldn't that mean that chlorine would have too many electrons cause that looks like 12 if i'm reading that answer right..
Asked by Sunaddiction - Fri Feb 22 20:00:43 2008 - - 2 Answers - 0 Comments
A. I presume ClO4- ...O ( double bond) O =Cl =O ...O- O=S -O- ...O-
Answered by Dr.A - Sat Feb 23 05:12:04 2008
Q. But wouldn't that mean that chlorine would have too many electrons cause that looks like 12 if i'm reading that answer right..
Asked by Sunaddiction - Fri Feb 22 20:00:43 2008 - - 2 Answers - 0 Comments
A. I presume ClO4- ...O ( double bond) O =Cl =O ...O- O=S -O- ...O-
Answered by Dr.A - Sat Feb 23 05:12:04 2008
How many valence electons in CO2, H2O,OF2,NCl3,SO3 2-?
Q. I don't need the dot formula just need to confirm my answers..thank you for helping
Asked by thankyou - Tue Mar 11 09:58:21 2008 - - 1 Answers - 0 Comments
A. CO2=16, H2O=8, OF2=16, NCl3=5, SO2=18 SO3=24 You may have gotten your answer sooner in the Chem dept.
Answered by New Victor - Fri Mar 14 01:05:54 2008
Q. I don't need the dot formula just need to confirm my answers..thank you for helping
Asked by thankyou - Tue Mar 11 09:58:21 2008 - - 1 Answers - 0 Comments
A. CO2=16, H2O=8, OF2=16, NCl3=5, SO2=18 SO3=24 You may have gotten your answer sooner in the Chem dept.
Answered by New Victor - Fri Mar 14 01:05:54 2008
What does CO and SO3 stand for?
Q. I have some science home work that asks what CO and SO3 ask for. I also need the diagrams. Can anyone help?
Asked by Lauren - Sun Sep 30 12:04:50 2007 - - 8 Answers - 0 Comments
A. first one CO is carbon monoxide. it is a linear molecule. SO3 is sulphur trioxide and it's pyramidal in shape. i think now you can draw the diagrams.good luck!!
Answered by Jewl - Sun Sep 30 12:13:59 2007
Q. I have some science home work that asks what CO and SO3 ask for. I also need the diagrams. Can anyone help?
Asked by Lauren - Sun Sep 30 12:04:50 2007 - - 8 Answers - 0 Comments
A. first one CO is carbon monoxide. it is a linear molecule. SO3 is sulphur trioxide and it's pyramidal in shape. i think now you can draw the diagrams.good luck!!
Answered by Jewl - Sun Sep 30 12:13:59 2007
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