Alcohols Phenols And Ethers Question 13

Question: During dehydration of alcohols to alkenes by heating with conc. $ H_2SO_4 $ the initiation step is

[AIEEE 2003]

Options:

A) Protonation of alcohol molecule

B) Formation of carbocation

C) Elimination of water

D) Formation of an ester

Show Answer

Answer:

Correct Answer: A

Solution:

$ H_2SO_4\to {H^{+}}+HSO_4^{-} $

$ C_2H_5OH+{H^{+}}\underset{ofalcohol}{\mathop{\xrightarrow{Protonation}}}\underset{\text{Protonated alcohol}}{\mathop{C_2H_5-\underset{H}{\mathop{\underset{\downarrow }{\overset{\oplus }{\mathop{O}}}}}-H}} $