Question Detail

CHM 102 Alkynes: Structure, Bonding, and Nomenclature Objective Question

Question

What is the IUPAC name for CH₃CH₂C≡CH?
Options
A 1‑Butene
B 2‑Butyne
C 1‑Butyne
Correct Answer
D Butane
Correct Answer

Option C is the correct answer.

Detailed Explanation

The longest chain containing the triple bond has 4 carbons, numbered to give the triple bond the lowest number, so 1‑butyne.

Hint

Suffix ‑yne for alkynes; triple bond starts at C1.

Question Info