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Which of the following alcohol undergoes esterification fastest when heated with concentrated H 2 SO 4 and CH 3 COOH? Ans given is methanol. Please explain how?

Which of the following alcohol undergoes esterification fastest when heated with concentrated H2SOand CH3COOH?
Ans given is methanol. Please explain how? 

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Grade:12

1 Answers

Arun
25750 Points
5 years ago

when methanol is heated with conc. H₂SO₄,methyl hydrogen sulphate is obtained in first step.This on further treatment with another mole of methanol gives methoxy methane along with H₂SO₄. This reaction is known as continuous etherification reaction.

CH₃-OH + H₂SO₄—-> CH₃-OSO₃H + H₂O

CH₃-OSO₃H + CH₃-OH—> CH₃-O-CH₃ + H₂SO₄

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