Chemistry Weekly Newsletter - Monday, December 28, 2015

Top new questions this week: Which of the following has higher enol content? Which of the following has higher enol content? The enol form of (A) and (B) is: Both the enols have hydrogen bonding. If the oxygen were to accept the pi electrns from carbon forming a ... resonance tautomer   asked by Aditya Dev 10 votes answered by Aditya Dev 5 votes Addition of HOBr across C=C Source: Carey Advanced Organic Chemistry B, problem 4.1 b Looking for interesting problems about addition to C=C, I came across this in the back of Carey. It looks like a simple addition ... organic-chemistry reaction-mechanism   asked by NotNicolaou 9 votes answered by jerepierre 6 votes Why was Lawrencium's symbol changed? The initial proposal by Lawrence Berkeley National Laboratory scientists for naming element 103 was "Lawrencium" with the symbol "Lw", However, while IUPAC accepted the name "Lawrencium" for the ... nomenclature transuranic-elements   asked by R.M. 8 votes answered by Loong 7 votes Disproportionation of hydrogen peroxide Hydrogen peroxide is decomposed as follows: $$\ce{2H2O2 -> 2H2O +O2}$$ This is a disproportionation redox reaction of $\ce{H2O2}$ involving the 2 half reactions $$\ce{H2O2 -> O2 + 2H^+ + 2e-}$$ ... homework redox   asked by YoussefDir 7 votes answered by Martin - マーチン 5 votes Why is sulfur hexafluoride highly stable? I was just reading about p Block elements from two different books. Both books say that $\ce{SF6}$ is extremely stable in 16th group due to steric reasons but my question is why is it more stable than ... inorganic-chemistry stability   asked by Quark 7 votes answered by Ivan Neretin 9 votes What does "less hindered hydrogen" mean? In a book they have given a statement, In the process of pyrolysis of esters, esters having beta hydrogen are heated at high temperature and then alkenes are formed along with carboxylic acid. ... organic-chemistry reaction-mechanism carbonyl-compounds   asked by Vinayak Agarwal 7 votes answered by Jan 5 votes Simple method to lengthen alkane? I'm working on a science project which involves the production of methane. I would like to be able to use the methane as fuel in (e.g.) cars (using octane) or gas tanks (using butane and propane) etc. ... organic-chemistry synthesis   asked by Shirayuki Rin 6 votes answered by ifilot 7 votes Greatest hits from previous weeks: Why doesn't calcium carbonate dissolve in water even though it is an ionic compound? I studied the solubility of compounds in water. I have found that calcium carbonate doesn't dissolve in water. The teacher stated that the ionic compounds dissolve in water except some carbonates. ... solubility   asked by Paul Janson 7 votes answered by Michael 9 votes How do I figure out the hybridization of a particular atom in a molecule? I'm learning how to apply the VSEPR theory to Lewis structures and in my homework I'm being asked to provide the hybridization of the central atom in each Lewis structure I've drawn. I've drawn out ... hybridization vsepr-theory   asked by Melanie Shebel 18 votes answered by Ben Norris 23 votes Can you answer these? Why was the Deville process of Alumina production given up in favor of the Bayer process? I guess this is a sort of historical question. The DeVille process seems fairly simple. Does anybody know the history or practical reasons for the switch? reaction-mechanism history-of-chemistry   asked by King-Ink 5 votes Stability of isomers of N4O I have googled and found that the structure of $\ce{N4O}$ is linear with a positive and negative charge on 2 nitrogen atoms. But, the following structure seems more stable because it fulfils octet for ... stability molecular-structure isomers   asked by ShankRam 6 votes How does VB theory explain the bond angles in SiO2? Silicon dioxide has a huge variety of structures. Most of them have a tetrahedral SiO2 unit cell — the O–Si–O angle is 109.5°, accordingly. The VB/hybridization approach to this tetrahedron ... hybridization valence-bond-theory   asked by Corundum 2 votes

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