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Chapter 11: 43bE (page 350)

What effect would you expect the following changes to have on the rate of thereaction of 1-iodo-2-methylbutane with cyanide ion?

(b) Both theand the 1-iodo-2-methylbutane concentrations are tripled.

Short Answer

Expert verified

It is a nucleophilic substitution reaction in which an old bond breaks and a new bond is formed both processes occur simultaneously. Hence, it鈥檚 a single-step reaction.

The two reacting species are involved in the rate determining steps.

Step by step solution

01

SN2reaction

It is a nucleophilic substitution reaction in which an old bond breaks and a new bond is formed both processes occur simultaneously. Hence, it鈥檚 a single-step reaction.

The two reacting species are involved in the rate determining steps.

02

Rate of the reaction

InSN2rate of the reaction depend on the reacting species and nucleophile.

Hence, triple the concentration of cyanide ion and the concentration of 1iodo2methyl butane. The net rate of the reaction becomes nine-foldandincreases by nine times. Hence, the reaction becomes very fast.

R鈥嬧赌�=鈥�KR.SN=鈥�K鈥�33=9K

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Most popular questions from this chapter

Question: 1-Chloro-1,2-diphenylethane can undergo E2 elimination to give either cis- or trans-1,2-diphenylethylene (stilbene). Draw Newman projections of the reactive conformations leading to both possible products, and suggest a reason why the trans alkene is the major product.

What stereochemistry do you expect for the trisubstituted alkene obtained by E2 elimination of the following alkyl halide on treatment with KOH? (Reddish brown = Br.)

What stereochemistry do you expect for the alkene obtained by E2 elimination of (1R, 2R)-1,2-dibromo-1,2-diphenylethane? Draw a Newman projection of the reacting conformation.

Write the product you would expect from reaction of each of the following alkyl halides with (1)Na+-SCH3and (2)Na+-OH (green = Cl):

b)

From which alkyl bromide was the following alkyl acetate made SN2 byreaction? Write the reaction, showing all stereochemistry.
See all solutions

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