Question Detail

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

Question

What is the product when propyne (CH3C≡CH) reacts with one equivalent of HBr?
Options
A 1-Bromopropene
B 2-Bromopropene
Correct Answer
C 1,2-Dibromopropane
D Propane
Correct Answer

Option B is the correct answer.

Detailed Explanation

Addition follows Markovnikov's rule: H adds to less substituted carbon (terminal), Br adds to more substituted carbon, giving 2-bromopropene (CH3CBr=CH2).

Hint

Markovnikov addition across one π bond.

Question Info