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

11.31 

The mechanism of acid dehydration of ethanol to yield ethane involves three steps:

Step 1:- Protonation of ethanol to form ethyl oxonium ion.

Step 2:- Formation of carbocation (rate determining step).

Step 3:-Elimination of a proton to form ethane

The acid consumed in step 1 is released in step 3