Question 1

Which of the following statements correctly describes the relative acidity of alcohols, thiols, and ethers?

Accepted Answer

Alcohols are more acidic than ethers because the hydroxyl group can donate a proton more easily.

Question 2

What is the correct order of reactivity for alcohols in nucleophilic substitution reactions (SN1 and SN2)?

Accepted Answer

Tertiary \u003e Secondary \u003e Primary

Question 3

Which reagent is commonly used to convert a primary alcohol to an alkyl halide via an SN2 mechanism?

Accepted Answer

$$\mathrm{$$SOCl_2$$}$$

Question 4

During the dehydration of alcohols with $$\mathrm{H_2SO_4}$$, which intermediate is most likely to form?

Accepted Answer

Carbocation

Question 5

Which of the following best explains why tertiary alcohols undergo SN1 reactions more readily than primary alcohols?

Accepted Answer

Tertiary carbocations formed during the reaction are more stable due to hyperconjugation and inductive effects.

Question 6

Which of the following is the correct mechanism for the conversion of a secondary alcohol to a ketone using PCC?

Accepted Answer

Oxidation via loss of two hydrogen atoms from the alcohol group

Question 7

In the pinacol rearrangement, what is the driving force for the migration of a methyl or hydride group?

Accepted Answer

Formation of a more stable carbocation

Question 8

Which of the following statements about ethers is correct?

Accepted Answer

Ethers are less reactive than alcohols because they lack a good leaving group.

Question 9

A student attempts to convert a chiral secondary alcohol to a chiral alkyl chloride using $$\mathrm{$$SOCl_2$$} in $$the presence of pyridine. What is the expected stereochemical outcome?

Accepted Answer

Inversion of configuration

Question 10

Which of the following is a correct statement about the dehydration of alcohols?

Accepted Answer

Dehydration of alcohols can lead to carbocation rearrangements, resulting in more stable products.

Question 11

Which of the following alcohols would be most reactive in an SN1 reaction?

Accepted Answer

tert-butanol

Question 12

What is the major product when 2-methyl-2-butanol is heated with concentrated $$\mathrm{H_2SO_4}$$?

Accepted Answer

2-methyl-2-butene

Question 13

Which of the following is the best explanation for why $$\mathrm{$$SOCl_2$$} is $$used to convert alcohols to alkyl chlorides?

Accepted Answer

$$\mathrm{$$SOCl_2$$}$$ activates the alcohol by converting the hydroxyl group into a better leaving group.

Question 14

During the conversion of a secondary alcohol to a ketone, which of the following is true?

Accepted Answer

The reaction involves the loss of two hydrogen atoms.

Question 15

Which of the following is a correct statement about the acidity of alcohols?

Accepted Answer

Alcohols are less acidic than carboxylic acids.

Question 16

Which of the following best describes the role of acid in the dehydration of alcohols?

Accepted Answer

Acid protonates the alcohol, making the hydroxyl group a better leaving group.

Question 17

Which of the following is the correct product of the pinacol rearrangement of 2,3-dimethyl-2,3-butanediol under acidic conditions?

Accepted Answer

Pinacolone (3,3-dimethyl-2-butanone)

Question 18

Which of the following is a key step in the mechanism of the pinacol rearrangement?

Accepted Answer

Migration of an alkyl group to stabilize a carbocation

Question 19

Which of the following is true regarding the SN2 reaction of a primary alcohol with $$\mathrm{$$SOCl_2$$}$$?

Accepted Answer

The reaction proceeds with inversion of configuration.

Question 20

Which of the following is a possible side reaction when alcohols undergo dehydration with $$\mathrm{H_2SO_4}$$?

Accepted Answer

Carbocation rearrangement leading to a more substituted alkene

Alcohols, Ethers, and Related Compounds: Structure, Reactions, and Mechanisms

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