Alcohols Phenols And Ethers Question 71

Question: Consider the following alcohols,

(I) (II) (III) (IV)
The order of decreasing reactivities of these alcohols towards nucleophilic substitution with HBr is:

Options:

A) III>I>IV>II

B) III>I>II>IV

C) I>III>IV>II

D) I>III>II>IV

Show Answer

Answer:

Correct Answer: A

Solution:

[a] More stable carbocation, more is the rate toward HBr (acid).