PUC Karnataka Science Class 12Department of Pre-University Education, Karnataka
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Solution for Preparation of Ethers by Acid Dehydration of Secondary Or Tertiary Alcohols is Not a Suitable Method. Give Reason. - PUC Karnataka Science Class 12 - Chemistry

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Question

Preparation of ethers by acid dehydration of secondary or tertiary alcohols is not a suitable method. Give reason.

Solution

The formation of ethers by dehydration of alcohol is a bimolecular reaction (SN2) involving the attack of an alcohol molecule on a protonated alcohol molecule. In the method, the alkyl group should be unhindered. In case of secondary or tertiary alcohols, the alkyl group is hindered. As a result, elimination dominates substitution. Hence, in place of ethers, alkenes are formed.

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APPEARS IN

 NCERT Solution for Chemistry Textbook for Class 12 (2015 to Current)
Chapter 11: Alcohols, Phenols and Ethers
Q: 27 | Page no. 346
Solution Preparation of Ethers by Acid Dehydration of Secondary Or Tertiary Alcohols is Not a Suitable Method. Give Reason. Concept: Preparation of Ethers from Dehydration of Alcohols and Williamson Systhesis.
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