Question Detail

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

What is the molecular formula of a cyclic alkyne with 5 carbons?
Options
A C5H8
B C5H10
C C5H6
Correct Answer
D C5H12
Correct Answer

Option C is the correct answer.

Detailed Explanation

A cyclic alkyne with one triple bond and one ring has two degrees of unsaturation from the ring plus two from the triple bond = 4 total, formula CnH2n-4 = C5H6 (e.g., cyclopentyne, though unstable).

Hint

Each ring or π bond removes two hydrogens.

Question Info

Course: CHM 102
Topic: Alkynes: Structure, Bonding, and Nomenclature
Type: Objective
Difficulty: Not specified
Question 216 of 1999
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