Question

Write mechanism of reaction of acid dehydration of ethanol with con.H2so4 at 443k to form ethene

Answer 1

Hi there,

First ethanol linked with sulphuric acid as the following

HCH2-CH2-OH + H-SO4H =>

H-CH2-CH2-SO4H + H2O at 80C°

then

H-CH2-CH2-SO4H => CH2=CH2 + H2SO4 at 170C°

Hope the answer is helpful