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Suggest a route to prepare ethyl hydroge...

Suggest a route to prepare ethyl hydrogensulphate `(CH_(3)-CH_(2)-OSO_(2)-OH)` starting from ethanol `(C_(2)H_(5)OH)` .

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When ethanol is heated with conc. `H_(2)SO_(4)` at 383 K, ethyl hydrogen sulphate is formed.
`H_(2)SO_(4) to H^(+)+ overset(-)OSO_(2)OH`
` underset("Ethanol")(CH_(3)CH_(2)OH+ H^(+)) to underset("Protonated alcohol")(CH_(3)- underset(H)underset(|)O^(+)-H)`
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