Question

The hydrogen halide which does not obey Markownikoff's rule in presence of a peroxide is.a) HCI
b) HBr
c) HF
d) HI

Answer 1

Answer:

HBr not follow markownokoff rules

Answer 2

Answer:

(b) HBr

Explanation:

As per the question,

According to question, Markownikoff's rule is defined as the addition reaction of a hydrogen halide acid to the alkene or alkyne. Hydrogen halides are symbolized as HX such are HCl, HF, HI  and so on. But in the presence of peroxide HBr doesn't follow this rule because the reaction steps are exothermic and also HBr adds a double bond. That's why HBr is only hydrogen halide which doesn't obey Markownikoff's rule.

Hence,the correct option is (b).