Question Detail

CHM 101 CHM 101 Past Questions Objective Question

Question

The major product formed when 2-methylprop-1-ene reacts with HBr is:
Options
A 1-bromo-2-methylpropane
B 2-bromo-2-methylpropane
Correct Answer
C 1-bromopropane
D 2-bromopropane
Correct Answer

Option B is the correct answer.

Detailed Explanation

2-methylprop-1-ene is (CH₃)₂C=CH₂. According to Markovnikov's rule, H adds to the less substituted carbon (the terminal CH₂), and Br adds to the more substituted carbon, giving 2-bromo-2-methylpropane (tert-butyl bromide).

Hint

The hydrogen adds to the carbon with more hydrogens; the halogen adds to the more substituted carbon.

Question Info