Prefixes like sec-, tert-, di-, tri-, tetra- are not used when alphabetizing substituents.

A carbon atom attached to three other carbon atoms.

Question 1

Which of the following is the correct IUPAC name for the compound with the condensed formula $\mathrm{CH_3CH_2CH(CH_3)CH_2CH_3}$?

Accepted Answer

2-methylpentane

Question 2

What is the general formula for alkanes?

Accepted Answer

$\mathrm{C_nH_{2n+2}}$

Question 3

Which of the following statements about alkane properties is correct?

Accepted Answer

Alkanes are hydrophobic and have increasing boiling points with longer chains.

Question 4

Which of the following is the correct name for the alkyl group derived from octane?

Accepted Answer

octyl

Question 5

How many constitutional isomers are possible for $\mathrm{C_4H_{10}}$?

Accepted Answer

2

Question 6

Which of the following best describes a constitutional isomer?

Accepted Answer

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

Question 7

What is the correct IUPAC name for the following structure?

$\mathrm{CH_3CH_2CH_2CH_2CH_3}$

Accepted Answer

pentane

Question 8

Which of the following is a correct rule for naming alkanes according to IUPAC nomenclature?

Accepted Answer

The parent chain is the longest continuous chain of carbon atoms.

Question 9

Which of the following functional groups contains a carbonyl group bonded to two alkyl groups?

Accepted Answer

Ketone

Question 10

A molecule with the formula $\mathrm{C_6H_{12}}$ has how many degrees of unsaturation?

Accepted Answer

1

Question 11

Which of the following is the correct name for the group $\mathrm{CH_3CH_2CH_2-}$?

Accepted Answer

propyl

Question 12

Which of the following is a correct statement about the nomenclature of cycloalkanes?

Accepted Answer

Number the ring to give the lowest possible numbers to the substituents.

Question 13

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

Accepted Answer

$\mathrm{CH_3(CH_2)_4CH_3}$

Question 14

Which of the following is a correct example of a carboxylic ester functional group?

Accepted Answer

$\mathrm{RCOOR'}$

Question 15

How many degrees of unsaturation does benzene ($\mathrm{C_6H_6}$) have?

Accepted Answer

4

Question 16

Which of the following is the correct order of increasing boiling points for the following alkanes: butane, hexane, octane?

Accepted Answer

butane < hexane < octane

Question 17

Which of the following is the correct name for the group $\mathrm{CH_3CH(CH_3)CH_2-}$?

Accepted Answer

isobutyl

Question 18

Which of the following statements about the use of prefixes in IUPAC nomenclature is correct?

Accepted Answer

Prefixes like sec-, tert-, di-, tri-, tetra- are not used when alphabetizing substituents.

Question 19

Which of the following best describes a tertiary carbon?

Accepted Answer

A carbon atom attached to three other carbon atoms.

Question 20

Which of the following is the correct IUPAC name for a cycloalkane with a three-carbon ring and a propyl group attached to carbon 1?

Accepted Answer

1-propylcyclopropane

Alkanes, Alkyl Groups, and Functional Groups: Nomenclature and Properties

Study Guide - Practice Questions