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Discuss the reaction and mechanism of ac...

Discuss the reaction and mechanism of acidic dehydration of ethyl alcohol to prepare ether.

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Dehydration of `1^@` alcohols like ethanol with conc. `H_2SO_4` at 413 K gives ethers. For example
`underset("Ethylalcohol")(2CH_3CH_2OH)overset(Conc.H_2SO_4//413K)rarrunderset("Diethylether")(CH_3CH_2-O-CH_2CH_3)`
Mechanism : This is an nucleophilic bimolecular reaction `(SN_2)` as shown below:
`H_2SO_4hArrH^(+)+HSO_4^(-)`
Step : I `underset("Alcohol")(CH_3-CH-overset(..)O-H+H^(+))rarrCH_3-CH_2-underset(H)underset(|)overset(..)(O^(+))-H`

Step : III `CH_3-CH_2-underset(H)underset(|)overset(..)(O^(+))-CH_2-CH_3rarrCH_3-CH_2-underset("Ether")underset(..)overset(..)O-CH_2-CH_3+H^(+)`
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