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Question
Which among the following is the correct order of ease of dehydration of alcohols?
Which among the following is the correct order of ease of dehydration of alcohols?
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Solution
The correct option is C 3°>2°>1°
Dehydration of alcohols takes place via formation of a carbocation intermediate. A tertiary carbocation is more stable than secondary and primary because the alkyl groups attached to the carbon atom shows the electron donating effect minimising the positive charge density. Thus a tertiary carbocation is the most stable, as it has 3 alkyl groups attached, secondary has 2 and primary has only 1 alkyl group pacifying the positive charge.
Dehydration of alcohols takes place via formation of a carbocation intermediate. A tertiary carbocation is more stable than secondary and primary because the alkyl groups attached to the carbon atom shows the electron donating effect minimising the positive charge density. Thus a tertiary carbocation is the most stable, as it has 3 alkyl groups attached, secondary has 2 and primary has only 1 alkyl group pacifying the positive charge.