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

Explanation

Step 1 : Protection of Alcohol :
`H-overset(H)overset(|)underset(H)underset(|)C-overset(H)overset(|)underset(H)underset(|)C-OH+overset(+)HhArrH-overset(H)overset(|)underset(H)underset(|)Coverset(H)overset(|)underset(H)underset(|)C-overset(H)overset(|)underset("+ ")(OH)`
Step 2 : Formationof Carbocation :
`H-overset(H)overset(|)underset(H)underset(|)C-overset(H)overset(|)underset(H)underset(|)C-underset(o+)C-Hunderset(-H_(2)O)hArrH-overset(H)overset(|)underset(H)underset(|)C-overset(H)overset(|)underset(H)underset(|)(C^(o+))`
Step 3 : Eliminationo f proton to form Ethene
`H-overset(H)overset(|)underset(H)underset(|)C-overset(H)overset(|)underset(H)underset(|)Co+underset(-H^(o+))rarrH-underset(H)underset(|)C=underset(H)underset(|)C-H`