# All Questions

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### “Asymmetric molecules are necessarily polar”

Is a molecule with no symmetry necessarily polar? Can a polar molecule still have some elements of symmetry (i.e. mirror image is the same as itself)? I think so ... because we can have achiral ...
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### Is it possible to normalize $K_c$ between different reactions for comparison?

A follow up question from this answer: Compare: $\ce{A(aq) +B(aq)->AB(aq)}$ $\ce{2A(aq) +B(aq)->A2B(aq)}$ We have two similar reactions but the equilibrium constants can vary by a ...
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### What do kf and kb, the forward and reverse rate constants, depend on in a reversible reaction?

What do the forward and the backward reaction constants depend on?
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### Doubt on Photoelectric effect

In the experiment to conduct photoelectric effect a clean metal was irradiated by monochromatic light of proper frequency, electrons are emitted. Why was monochromatic light used in the experiment? ...
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### what is the # of protons on adjacent atoms? what is consider adjacent? [on hold]

looking at the nmr for aspirin, would i consider CH3 as 3 protons adjacent to the aryl hydrogen a couple of carbons away?
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### about stereochemistry/major product [on hold]

Supply the correct major product formed from the following reaction link to the reaction/picture - http://i.imgur.com/9tmrS38.png
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### Is there a heat capacity of an object when it is melting?

Is there a heat capacity of an object when it is melting? I'm questioning it since the temperature doesn't change during phase transitions and the units of heat capacity is Joules/Kelvin.
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### “There are no chemical cliffs”

Are there any reactions with no activation energies? Prof just told us there are no chemical cliffs. Is this true? I read something about nuclear decay as being a reaction with no activation ...
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### Osmium tetroxide and meta-chloroperoxybenzoic acid

Can these be used to induce acetal ring closures? For example, when dealing with a molecule that has both a C=O functional group and an alkene as part of its structure and there is the possibility of ...
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### Imine stability in acids and bases

I understand that imines can be hydrolyzed in acidic medium. But what about in basic medium? Can imines still be hydrolyzed? I have a plausible mechanism ... nitrogen's withdrawal of electron ...
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### Why hybridization occurs in diatomic molecule

In diatomic nitrogen There are two electron configurations I'd like to compare: 1s2 2s2(lone pair) 2p3(the bonding electrons sigma,pi,pi) 1s2 2sp(lone pair) 2sp(sigma bonding) 2p2(pi,pi bonding) ...