Question

The compound which gives the most stable carbonium ion on protonation followed by loss of water is:

• A.
• B.
• C. $C{H}_3-C{H}_2-C{H}_2-C{H}_{2}OH$
• D.

Answer 1

The correct option is B

The order of stability of carbonium ion is
tertiary > secondary > primary > methyl
Tertiary carbonium ion (formed in $b$ ) are more stable because of electron donating (+I effect) nature of $C{H}_3$ group due to which the +ve charge gets dispresed and also due to hyperconjugation. Hence b gives the most stable carbonium ion on dehydration.