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Place the following alcohols in decreasi...

Place the following alcohols in decreasing order of rate of dehydration with `H_(2)SO_(4)`.
`CH_(3)CH_(2)CHunderset((A))((OH))CH_(2)CH_(2)CH_(3)`
`(CH_(3))_(2)Cunderset((B))((OH))CH_(2)CH_(2)CH_(3)`
`(CH_(3))_(2)Cunderset((C))((OH))CH(CH_(3))_(2)`
`CH_(3)CH_(2)CHunderset((D))((OH))CH(CH_(3))_(2)`
`CH_(3)CH_(2)CH_(2)underset((E))(CH_(2))CH_(2)CH_(2)OH`

A

`III gt II gt IV gt V I`

B

`III gt II gt IV gt I gt V`

C

`III gt II gt I gt IV gt V`

D

`III gt II gt I gt V gt IV`

Text Solution

Verified by Experts

The correct Answer is:
B
The alcohols (II) and (III) both are `3^(@)`, but alcohol (III) gives a more substituted alkene, Alcohol (IV) and (I) both are `2^(@)`, but alcohol (IV) can give a more substituted alkene and alcohol (V) is `1^(@)`.Rate of dehydration of alcohols with conc. `H_(2)SO_(4)` follows the order
`3^(@) gt 2^(@) gt 1^(@)`
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