Question 1

What is the correct IUPAC name for the following compound?

CH$$_3$$–CH$$_2$$–CH$$_2$$–CH(CH$$_2CH$_3$$)–CH$$_2$$–CH(CH$$_3$$)–CH$$_3$$

Accepted Answer

4-ethyl-2-methyloctane

Question 2

Which of the following is the correct order of steps for naming an alkane according to IUPAC rules?

Accepted Answer

Find the longest chain, number the chain from the end nearest a substituent, list substituents alphabetically

Question 3

What is the IUPAC name for the compound with the following structure?

CH$$_3$$–CH$$_2$$–CH(CH$$_3$$)–CH$$_2$$–CH$$_2$$–CH$$_3$$

Accepted Answer

3-methylhexane

Question 4

Which of the following statements about alkanes is TRUE?

Accepted Answer

Alkanes are non-polar and insoluble in water

Question 5

A compound has the formula C$$_5H$_{12}$$ and is named 2,2-dimethylpropane. Which structural feature does it have?

Accepted Answer

A branched chain with two methyl groups on the second carbon

Question 6

Which of the following is the correct IUPAC name for the compound with two bromine atoms on the same carbon of butane?

Accepted Answer

2,2-dibromobutane

Question 7

Which of the following is a property shared by alkanes, alkenes, and alkynes?

Accepted Answer

They are all non-polar molecules

Question 8

What is the IUPAC name for the following compound?

CH$$_3$$–CH$$_2$$–CH=CH–CH$$_3$$

Accepted Answer

2-pentene

Question 9

Which of the following best describes the difference between an alkene and an alkyne?

Accepted Answer

An alkene contains a C=C double bond, while an alkyne contains a C≡C triple bond

Question 10

A compound is named 4-ethyl-2-methylhexane. Which of the following is true about its structure?

Accepted Answer

It has a six-carbon chain with an ethyl group at carbon 4 and a methyl group at carbon 2

Question 11

Which of the following is the correct condensed formula for 2,3-dimethylpentane?

Accepted Answer

CH$$_3$$–CH(CH$$_3$$)–CH(CH$$_3$$)–CH$$_2$$–CH$$_3$$

Question 12

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

CH$$_3$$–CH$$_2$$–C(CH$$_3$$)$$_2$$–CH$$_2$$–CH$$_3$$

Accepted Answer

3,3-dimethylpentane

Question 13

Which of the following is the correct IUPAC name for a compound with a chlorine atom on carbon 3 and a methyl group on carbon 2 of pentane?

Accepted Answer

3-chloro-2-methylpentane

Question 14

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

CH$$_3$$–C≡C–CH(CH$$_3$$)–CH$$_3$$

Accepted Answer

3-methyl-1-butyne

Question 15

Which of the following is the correct IUPAC name for a compound with a double bond starting at carbon 2 and a methyl group at carbon 4 of pentene?

Accepted Answer

4-methyl-2-pentene

Question 16

Which of the following is the correct IUPAC name for a compound with two fluoro groups at carbons 3 and 5, and a methyl group at carbon 3 of heptane?

Accepted Answer

3,5-difluoro-3-methylheptane

Question 17

Which of the following is the correct IUPAC name for a compound with a bromo group at carbon 4 and a triple bond starting at carbon 2 of pentyne?

Accepted Answer

4-bromo-2-pentyne

Introduction to Organic Chemistry: Alkanes, Alkenes, and Alkynes – Structure, Nomenclature, and Properties

Study Guide - Practice Questions