Practice Exercise 1

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Chapter 9: Substitution and Elimination Reactions of Alkyl Halides

Exercises

Practice Exercise 1

This activity contains 7 questions.

Which of the following is not a true statement?

The nature of the nucleophile affects the rate of an S_N1 reaction.The nature of the leaving group does not affect the rate of an S_N2 reaction.The concentration of the alkyl halide does not affect the rate of an S_N2 reaction.The concentration of the alkyl halide affects the rate of an S_N1 reaction.The nature of the leaving group does not affect the rate of an S_N1 reaction.

Which of the following is a true statement?

The weaker the base, the better it is as a leaving group.The stronger the base, the better it is as a leaving group.Strong bases do not share their electrons as well as do weak bases.The smaller the group, the better it is as a leaving group.The more electronegative the group, the better it is as a leaving group.

What nucleophile must an alkyl halide react with if an ether is the desired product of an S_N2 reaction?

HO^-HS^-RO^-RS^-NH₃

Which statement best describes the mechanism of an S_N1 reaction?

concerted reaction with retentionradical formation with partial racemizationconcerted reaction with partial racemizationcarbocation formation with retentioncarbocation formation with partial racemization

Which of the following alkyl halides is the most reactive in an S_N1 reaction?

chloromethane2-fluoropropane2-iodo-2-methylpropane2-bromo-2-methylpropane1-iodopropane

What is the product of the S_N1 hydrolysis of (R)-3-chloro-3-methylheptane?

(S)-3-methyl-3-heptanol(R)-3-methyl-3-heptanol(R) and (S)-3-methoxy-3-methylheptanol-3(R) and (S)-3-methyl-3-heptanol with slightly more of the R isomer(R) and (S)-3-methyl-3-heptanol with slightly more of the S isomer

What product will be formed from the reaction of cis-1-bromo-4-methylcyclohexane with methoxide ion under S_N2 conditions?

trans- and cis-1-methoxy-4-methylcyclohexanecis-1-methoxy-4-methylcyclohexanetrans-4-methylcyclohexanoltrans- and cis-4-methylcyclohexanoltrans-1-methoxy-4-methylcyclohexane

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