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Chapter 11: 44aE (page 350)

What effect would you expect the following changes to have on the rate of the reaction of ethanol with 2-iodo-2-methyl butane?

(a) The concentration of the halide is tripled.

Short Answer

Expert verified

It is a nucleophilic substitution reaction in which an old bond breaksis a break 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 breaksis a break 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, on triple the concentration of halide the rate of the reaction get increases Hence, the rate become triple and the reaction becomes fast.

R鈥嬧赌�=鈥�KR.SN=鈥�K鈥�3=3K

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Most popular questions from this chapter

Question: Propose structures for compounds that fit the following descriptions:

(a) An alkyl halide that gives a mixture of three alkenes on E2 reaction

SN2 reactions take place with inversion of configuration, andSN1 reactions take place with racemization. The following substitution reaction, however, occurs with complete retention of configuration. Propose a mechanism.

.

Methyl esters (RCO2CH3) undergo a cleavage reaction to yield carboxylate ions plus iodomethane on heating with LiI in dimethylformamide:

The following evidence has been obtained: (1) The reaction occurs much faster in DMF than in ethanol. (2) The corresponding ethyl ester (RCO2CH2CH3) cleaves approximately 10 times more slowly than the methyl ester. Propose a mechanism for the reaction. What other kinds of experimental evidence could you gather to support your hypothesis?

Treatment of 1-bromo-2-deuterio-2-phenylethane with strong base leads to a mixture of deuterated and nondeuterated phenylethylenes in an approximately 7;1 ratio. Explain

Question: Ignoring double-bond stereochemistry, what products would you expect from elimination reactions of the following alkyl halides? Which product will be the major product in each case?
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