Question 1

Which of the following statements correctly describes the difference between an alcohol and a phenol?

Accepted Answer

Phenols have an —OH group bonded directly to an aromatic, benzene-like ring, while alcohols have an —OH group bonded to a saturated, alkane-like carbon.

Question 2

Which compound is more acidic: ethanol or phenol? What is the reason for this difference?

Accepted Answer

Phenol, because the aromatic ring stabilizes the negative charge on the phenoxide ion.

Question 3

What is the IUPAC name for the following structure: CH3—CH2—CH2—CH2—OH?

Accepted Answer

1-Butanol

Question 4

Which of the following is a correct classification for isopropyl alcohol (CH3)2CHOH?

Accepted Answer

Secondary alcohol

Question 5

Which of the following compounds is commonly used as antifreeze in automobiles?

Accepted Answer

Ethylene glycol

Question 6

What is the major product when 2-butanol undergoes dehydration with a strong acid and heat?

Accepted Answer

2-Butene

Question 7

Which of the following best explains why alcohols have higher boiling points than alkanes of similar molecular mass?

Accepted Answer

Alcohols can form hydrogen bonds due to the presence of the —OH group.

Question 8

Which reagent is commonly used to oxidize primary alcohols to carboxylic acids?

Accepted Answer

KMnO4

Question 9

What is the IUPAC name for the ether with the structure CH3—O—CH2—CH2—CH2—CH2—CH3?

Accepted Answer

1-methoxypentane

Question 10

Which of the following statements about thiols is correct?

Accepted Answer

Thiols are sulfur analogs of alcohols and contain an —SH group.

Question 11

Which of the following is the correct product when a secondary alcohol is oxidized?

Accepted Answer

A ketone

Question 12

Which of the following is NOT a property of ethers?

Accepted Answer

Ethers can form hydrogen bonds with themselves.

Question 13

Which of the following reactions describes the oxidation of ethanol in the human body?

Accepted Answer

Ethanol is converted to acetaldehyde, then to acetic acid.

Question 14

Which of the following compounds is most likely to be used as a disinfectant due to its antiseptic properties?

Accepted Answer

Phenol

Question 15

Which of the following is the correct classification for the alcohol in rubbing alcohol (isopropyl alcohol)?

Accepted Answer

Secondary alcohol

Question 16

Which of the following is a correct statement about the solubility of alcohols in water?

Accepted Answer

Alcohols with more —OH groups are more soluble in water.

Question 17

Which of the following is the correct product when a tertiary alcohol is treated with an oxidizing agent?

Accepted Answer

No reaction occurs

Question 18

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

Accepted Answer

Dehydration of alcohols produces alkenes.

Question 19

Which of the following is the correct IUPAC name for the compound with the structure HOCH2CH(OH)CH2OH?

Accepted Answer

1,2,3-Propanetriol

Question 20

Which of the following is a correct statement about the role of disulfide bonds in proteins?

Accepted Answer

Disulfide bonds help shape large protein molecules by linking cysteine residues.

Alcohols, Phenols, Thiols, and Ethers: Structure, Properties, and Reactions

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