CHE302 02V18 2018SU Which of the following is the fastest Sul reaction? CH 2 Whi
ID: 705250 • Letter: C
Question
CHE302 02V18 2018SU Which of the following is the fastest Sul reaction? CH 2 Which of the following is correct for E2 mechanism? (a) Proton and leaving group leave simultaneously. (c) Proton substitutes the leaving group. (b)Proton leaves first. (d) Leaving group leaves first. Energy diagram of an Sx2 reaction shown below represents three curves for three solvent types. Which of the following is correct about the type of solvent represented by curvell 1, 2 and 3 in the diagram? 3 AG Reaction progress (a) 1 is polar protic, 2 is nonpolar and, 3 is polar aprotic. (b) I is polar protic, 2 is polar aprotic and, 3 is nonpolar. (c) 1 is nonpolar, 2 is polar aprotic and, 3 is polar protic. (d) 1 is polar aprotic, 2 is polar protic and, 3 is nonpolar. Polar protic solvents tend to favor which reaction mechanisms? (a) Swl and Su2 (b) Sul and EI () Su2 and E2 (d) El and E2 4 5 Draw the products and label them as major or minor for the following reaction by E2 mechanism.Explanation / Answer
Answer -
1. 3 degree is most reactive towards SN1 reaction.
Hence option B is correct.
2. Concept of E2 mechanism - In the E2 mechanism, a base abstracts a proton neighboring the leaving group, forcing the electrons down to make a double bond, and, in so doing, forcing off the leaving group. numerous things happen simultaneously in a mechanism
Option A is correct.
3.Correct answer -B
SN2 reaction is good in protic and polar aprotic solution.
Polar aprotic is beast choice.
4.C .
SN2 and E2
5.