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What happens when ethanol is heated with conc. H_(2)SO_(4) at 453 K ? Explain the mechansim of this reaction.

Answer»

Solution :When ETHANOL is heated with CONC. `H_(2)SO_(4)` at 453K, ethene is formed.
`CH_(#)CH_(2)OH overset("conc. "H_(2)SO_(4))underset(453K)RARR CH_(2)=CH_(2)+H_(2)O`
Mechanism of the reaction is explained as under :
`CH_(3)CH_(2) overset(* *)underset(* *)OH+H^(+)rarr CH_(3)CH_(2)overset(+)OH_(2)`
`CH_(3)CH_(2)overset(+)OH_(2)rarr underset("carbocation")underset("Ethyl")(CH_(3)overset(+)CH_(2))+H_(2)O`


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