Question 1

Which of the following is the correct IUPAC name for a molecule with a five-carbon chain, methyl groups on carbons 2 and 3, and no other substituents?

Accepted Answer

2,3-dimethylpentane

Question 2

What is the general molecular formula for an alkene with $$n$$ carbon atoms?

Accepted Answer

$$C_nH_{2n}$$

Question 3

Which statement best describes the solubility of alkenes in water?

Accepted Answer

Alkenes are not soluble in water because they are non-polar.

Question 4

A compound has the formula $$CH_3CH_2CBr_2CH_3. $$What is its correct IUPAC name?

Accepted Answer

2,2-dibromobutane

Question 5

Which of the following compounds is an alkyne?

Accepted Answer

$$CH \equiv CH$$

Question 6

What is the IUPAC name for the following structure: $$CH_3CH_2CH(CH_3$)CH_2CH_3$$?

Accepted Answer

3-methylpentane

Question 7

Which of the following statements about the physical properties of alkanes, alkenes, and alkynes is correct?

Accepted Answer

Their boiling and melting points increase with molecular weight.

Question 8

A molecule has the structure $$CH_3CH_2CH=$$CHCH_3$$. What is its IUPAC name?

Accepted Answer

2-pentene

Question 9

Which rule is followed when numbering the carbon chain in haloalkenes?

Accepted Answer

Number from the end nearer the double or triple bond.

Question 10

What is the IUPAC name for the compound $$CH_3CH_2CH_2CH_2CH_2CH_2CH_3$$?

Accepted Answer

heptane

Question 11

A compound has a seven-carbon chain with methyl and fluoro substituents both on carbon 3, and another fluoro on carbon 5. What is its IUPAC name?

Accepted Answer

3,5-difluoro-3-methylheptane

Question 12

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

Accepted Answer

$$CH_2$$=$$CH_2$$

Question 13

What is the correct IUPAC name for a compound with a four-carbon chain, a triple bond at carbon 1, and a methyl group at carbon 3?

Accepted Answer

3-methyl-1-butyne

Question 14

Which of the following is the correct IUPAC name for a compound with a five-carbon chain, a triple bond at carbon 2, and a bromo substituent at carbon 4?

Accepted Answer

4-bromo-2-pentyne

Question 15

A compound has an eight-carbon chain with methyl groups at carbons 2 and 6, and a double bond at carbon 3. What is its IUPAC name?

Accepted Answer

2,6-dimethyl-3-octene

Question 16

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

Accepted Answer

They are highly soluble in non-polar solvents.

Question 17

What is the correct IUPAC name for a compound with an eight-carbon chain, an ethyl group at carbon 5, and a methyl group at carbon 3?

Accepted Answer

5-ethyl-3-methyloctane

Question 18

Which of the following is the correct IUPAC name for a compound with a five-carbon chain, a double bond at carbon 2, and a methyl group at carbon 4?

Accepted Answer

4-methyl-2-pentene

Question 19

Which of the following is the correct IUPAC name for a five-carbon chain with a chloro group at carbon 3 and a methyl group at carbon 2?

Accepted Answer

3-chloro-2-methylpentane

Chapter 11: Introduction to Organic Chemistry – Hydrocarbons, Alkanes, Alkenes, Alkynes, and Nomenclature

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