4. Alkanes and Cycloalkanes

Draw all internal symmetrical alkynes with the molecular formula C₁₀H₁₈.

For each molecular formula, draw all the isomeric alkynes, and give their IUPAC names. Circle the acetylenic hydrogen of each terminal alkyne.

(a) C₅H₈ (three isomers)

Identify the following halogen-containing compounds as a haloalkane, haloalkene, or haloarene.

(b)

Identify the following halogen-containing compounds as a haloalkane, haloalkene, or haloarene.

(e)

Identify the following halogen-containing compounds as a haloalkane, haloalkene, or haloarene.

(f)

Give common names for the following compounds.

(c) 3-methyloct-4-yne

(d) (CH₃)₃C–C≡C–CH(CH₃)CH₂CH₃

Give common names for the following compounds.

(a) CH₃–C≡C–CH₂CH₃

(b) Ph–C≡C–H