Q.11 Write the mechanism of hydration of ethene to yield ethanol.
Ethanol is yielded from ethene by acid catalysed hydration.
The mechanism:
Step 1. Protonation of alkene to form carbocation by electrophilic attack of hydronium ion.
Step 2. Nucleophilic attack of water on carbocation.
Step 3. Deprotonation to form an alcohol.