Which of the following reactions proceeds with inversion of configuration at the

Question

Which of the following reactions proceeds with inversion of configuration at the carbon bearing the leaving group? S_N2 S_N1 E2 E1 All of these answer choices arc correct. By analyzing the starting material and the product(s), the following reaction is possibly an example of what type of mechanism? S_N1 S_N2 E1 E2 More than one of these choices. Identify the nucleophile in the following reaction: 2 H_2O + RX rightarrow ROH + H_3O^+ + X^- X H_3O^+ ROH H_2O RX Which is the strongest nucleophile? OH^- CH_3CH_2OH^- CH_3CH_2OH H_2O Which S_N2 reaction would you expect to take place most rapidly? Assume that the concentrations of the reactants and the temperature are the same in each instance. The molecules below are: structural isomers, enantiomers. Diastereomers identical none of these choices. The molecules below are: enantiomers Diastereomers constitutional isomers. Two different conformation of the same molecule. Not isomeric. Which one of the following can exist in optically active forms? Cis-1, 3-dichlorcylohexane trans-1, 3-dichlorcylohexane cia-1, 4-dichlorcylohexane trans-1, 4-dichlorcylohexane cis-1, 2-dichlorcylohexane

Explanation / Answer

15)

in SN2 reaction, inversion take place

If reactant is R enantiomer, after SN2 reaction product will become S enantiomers.

16)

in SN1 reaction, carbocation is formed and both R and S enantiomers gets formed

That is why this is SN1

17)

H2O is nucleophile which attack H+ and form H3O+

18)

Greater the negative charge , stronger will be nucleophile

CH3CH2O- will have maximum negative charge because of +I effect of CH3CH2

I am allowed to answer only 1 question at a time

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