Preparation of alcohols from alkene by hydration

By HARI -
Alkenes undergo hydration (addition of water across C=C bond) in presence of dilute H2SO4 to produce alcohols.
Ethene-forming-ethanol

In the case of unsymmetrical alkenes, addition of water to the double bond is in accordance with Markownikoff’s rule.
unsymmetrical-alkene-forming-alcohol

Industrially, the alkene obtained by cracking of hydrocarbons, is absorbed by passing it into sulphuric acid at k and atmospheric pressure. The acid is diluted and treated with steam to release the alcohol.
Industrially-producing-ethanol

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