Give a mechanism for the acid-catalysed dehydration of ethyl alcohol to form diethyl ether.

Explanation

(c ) The hydroxyl group in 3,3-dimethyl butan -2-ol undergoes protonation followed by dehydration to form a secondary carbocation which undergoes a methyl shift to form a more stable tert-carbocation and the removal of `H^(+)` gives a doulbe bond.