Hydrocarbons 2 Question 74
79. Give reasons for the following in one or two sentences :
(i) Methane does not react with chlorine in the dark.
(ii) Propene reacts with $\mathrm{HBr}$ to give isopropyl bromide but does not give $n$-propyl bromide.
$(1983,1 \mathrm{M} \times \mathbf{2}=\mathbf{2 M})$
Show Answer
Solution:
- (i) Free radical chlorination of alkane require energy which is supplied either in the form of heat or radiation.
(ii) Addition of $\mathrm{HBr}$ proceeds through carbocation intermediates.
