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Write the mechanism of acid catalysed de...

Write the mechanism of acid catalysed dehydration of ethanol to give ethene.

Text Solution

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When alcohols are heated with a suitable dehydrating agents like sulphuric acid, the H and OH present in the adjacent carbon of alcohols are lost, and it results in the formation of a carbon - carbon double bond. Phosphoric acid, anydrous `ZnCl_(2)`, aluminia etc., can also be used as dehydrating agents.
Example
`CH_(3)-CH_(2)-OH overset(H_(2)SO_(4)) underset(443K) to CH_(2)= CH_(2) + H_(2)O`
Mechanism:
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