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Arrange in order of decreasing reactivit...

Arrange in order of decreasing reactivity in electrophilic addition:
`(I) Ph CH=CH COOH`
`(II) p-NO_(2)-C_(6)H_(4)-CH=CH COOH`
`(III) p-MeO C_(6)H_(4)CH=CH COOH`
`(IV) p-C1C_(6)H_(4)CH=CHCOOH`

A

`II gt I gt IV gt III`

B

`III gt IV gt I gt II`

C

`III gt I gt IV gt II`

D

`II gt IV gt I gt III`

Text Solution

Verified by Experts

The correct Answer is:
C
Rds is formation of carbocation in case of `A_(E)` reactions and order of stability of various carbocations is :
`p-MeO-C_(6)H_(4)-overset(o+)CH-CH_(2)COOH`
`gtPh-overset(o+)CH-CH_(2)COOH`
`p-Cl-C_(6)H_(4)overset(o+)CH-CH_(2)-COOH`
`gtp-NO_(2)-C_(6)H_(4)overset(o+)CH-CH_(2)COOH`
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