Question

Which of the following statements is correct regarding case of dehydration in alcohols?

• A. Primary > Secondary
• B. Secondary > Tertiary
• C. Tertiary > Primary
• D. None of these

Answer 1

The correct option is C Tertiary > Primary

Dehydration of alcohol forms carbocation as intermediate. More stable is the carbocation, ease of reaction is more.

The order of stability of carbocation is:

$tertiary>secondary>primary$

So, the dehydration of tertiary alcohol is faster than the dehydration of the secondary alcohol and the dehydration of the secondary alcohol is faster than the dehydration of primary alcohol.

Hence, the option $C$ is correct.