Question 1

Which of the following correctly describes the structural difference between an aldehyde and a ketone?

Accepted Answer

An aldehyde has the carbonyl group bonded to at least one hydrogen atom, while a ketone has it bonded to two carbon atoms.

Question 2

What is the IUPAC name for the following compound? $$CH_3CH_2CH_2CH_2CHO$$

Accepted Answer

Pentanal

Question 3

Which of the following compounds would have the highest boiling point?

Accepted Answer

$$CH_3CH_2CH_2CH_2OH$$

Question 4

Which member in the following pair is more water soluble? 
A) $$CH_3CH_2CH_2CH_2CH_2CH_2CH_2CH_2CH_2CHO 
B$$) $$CH_3CHO$$

Accepted Answer

B) $$CH_3CHO$$

Question 5

What is the correct IUPAC name for the following structure? 
$$CH_3COCH_2CH_3$$

Accepted Answer

2-Butanone

Question 6

Which of the following statements about carboxylic acids is TRUE?

Accepted Answer

Carboxylic acids contain both a carbonyl and a hydroxyl group.

Question 7

Which of the following is the correct condensed formula for butyric acid?

Accepted Answer

$$CH_3CH_2CH_2COOH$$

Question 8

Which of the following best explains why aldehydes and ketones have higher boiling points than alkanes of similar molecular weight?

Accepted Answer

Aldehydes and ketones have dipole-dipole interactions due to the polar carbonyl group.

Question 9

Which of the following is the correct IUPAC name for the compound with the structure $$CH_3CH_2CH_2CH_2COCH_3$$?

Accepted Answer

3-Hexanone

Question 10

Which of the following is the correct common name for $$CH_3CH_2CHO$$?

Accepted Answer

Propionaldehyde

Question 11

Which of the following is the correct IUPAC name for lactic acid?

Accepted Answer

2-hydroxypropanoic acid

Question 12

Which of the following is the correct structure for 3-chloro-4-methylbenzaldehyde?

Accepted Answer

A benzene ring with a formyl group at position 1, a methyl group at position 4, and a chlorine at position 3.

Question 13

Which of the following is the correct IUPAC name for the compound with the structure $$CH_3CH_2COCH_2CH_3$$?

Accepted Answer

2-Pentanone

Question 14

Which of the following is the correct IUPAC name for the compound with the structure $$CH_3CH_2CH_2CH_2COOH$$?

Accepted Answer

Pentanoic acid

Question 15

Which of the following is the correct IUPAC name for the compound with the structure $$CH_3CH(OH)COOH$$?

Accepted Answer

2-hydroxypropanoic acid

Question 16

Which of the following is the correct IUPAC name for the compound with the structure $$CH_3CH_2CH_2CH_2CH_2COOH$$?

Accepted Answer

Hexanoic acid

Question 17

Which of the following is the correct IUPAC name for the compound with the structure $$CH_3CH_2CH_2CH_2CH_2CH_2COOH$$?

Accepted Answer

Heptanoic acid

Question 18

Which of the following is the correct IUPAC name for the compound with the structure $$CH_3CH_2CH_2CH_2CH_2CH_2CH_2COOH$$?

Accepted Answer

Octanoic acid

Question 19

Which of the following is the correct IUPAC name for the compound with the structure $$CH_3CH_2CH_2CH_2CH_2CH_2CH_2CH_2COOH$$?

Accepted Answer

Nonanoic acid

Aldehydes, Ketones, and Carboxylic Acids: Structure, Nomenclature, and Properties

Study Guide - Practice Questions