1.

Writethemechanismofacidcatalyzed dehydrationofethanol to givenethene.

Answer»

Solution :Themechanism ofdehydrationofethanolinvolvesthefollowingorder:
Step 1: Initiallyethylalcoholgetsprotonatedto formethyloxonium ion.

Step 2 :Formationofcarbocation:It isthesloweststepandhence, theratedeterminingstepofthereaction.

Step : 3Formationofethene byeliminationofaproton

THEACID usedin step 1 isreleasedin step 3,theequilibriumisshiftedtotheright, etheneis removedas it is FORMED.


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