Question 1

Which of the following statements best describes a saturated hydrocarbon?

Accepted Answer

A hydrocarbon containing only single bonds between carbon atoms.

Question 2

What is the general formula for a straight-chain alkane?

Accepted Answer

$$C_nH_{2n+2}$$

Question 3

Which of the following is the correct IUPAC name for the compound shown below?

$$\mathrm{CH_3$-CH_2$-CH(CH_3$)-CH_3$}$$

Accepted Answer

2-methylbutane

Question 4

How many structural isomers are possible for the molecular formula $$C_4H_{10}$$?

Accepted Answer

2

Question 5

Which of the following is an alkyl group derived from propane?

Accepted Answer

Propyl ($$-CH_2CH_2CH_3)$$

Question 6

A hydrocarbon with the formula $$C_7H_{16} is $$classified as which of the following?

Accepted Answer

Alkane

Question 7

Which of the following is the correct IUPAC name for the compound shown below?

$$\mathrm{CH_3$-CH(CH_3$)-CH_2$-CH_2$-CH_3$}$$

Accepted Answer

2-methylpentane

Question 8

Which of the following steps is NOT part of the IUPAC naming process for alkanes?

Accepted Answer

Number the carbon atoms to give the highest possible numbers to the substituents.

Question 9

What is the IUPAC name for the following structure?

$$\mathrm{CH_3$-CH_2$-CH(CH_3$)-CH_2$-CH_3$}$$

Accepted Answer

3-methylpentane

Question 10

Which of the following compounds is an aromatic hydrocarbon?

Accepted Answer

Benzene

Question 11

A compound has the following structure:

$$\mathrm{CH_3$-CH_2$-CH_2$-CH_2$-CH_3$}$$

What is its IUPAC name?

Accepted Answer

Pentane

Question 12

Which of the following best describes a constitutional (structural) isomer?

Accepted Answer

Compounds with the same molecular formula but different connectivity of atoms.

Question 13

Which of the following is the correct condensed structural formula for hexane?

Accepted Answer

$$CH_3CH_2CH_2CH_2CH_2CH_3$$

Question 14

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

$$\mathrm{CH_3$-CH_2$-CH(CH_3$)-CH_2$-CH_2$-CH_3$}$$

Accepted Answer

3-methylhexane

Question 15

Which of the following is the correct name for a compound with two methyl groups on the third and fourth carbons of a hexane chain?

Accepted Answer

3,4-dimethylhexane

Question 16

Which of the following is a correct example of an alkyl group and its parent alkane?

Accepted Answer

Ethyl ($$-CH_2CH_3) $$from ethane

Question 17

A patient is exposed to a hydrocarbon with the formula $$C_6H_{14}. $$Which of the following is a possible name for this compound?

Accepted Answer

Hexane

Question 18

Which of the following is the correct IUPAC name for the compound shown below?

$$\mathrm{CH_3$-CH_2$-CH_2$-CH(CH_3$)-CH_3$}$$

Accepted Answer

4-methylpentane

Question 19

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

$$\mathrm{CH_3$-CH_2$-CH_2$-CH_2$-CH_2$-CH_3$}$$

Accepted Answer

Hexane

Question 20

Which of the following is the correct IUPAC name for a compound with two ethyl groups on the fourth and sixth carbons of a nonane chain?

Accepted Answer

4,6-diethylnonane

Introduction to Organic Chemistry: Alkanes and Their Nomenclature

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