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Dehydration of Alcohols

Write the mec...

Question

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

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Solution

Mechanism of acid catalysed dehydration of ethanol
Step I: Protonation of ethanol

Step II: Formation of carbocation

Step III: Elimination of a proton

Note The acid used in Step I is released in Step III. To drive the equilibrium to the right, ethene is removed as it is formed.

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Dehydration of Alcohols

Standard XII Chemistry

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