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What is the order of reactivity of these...

What is the order of reactivity of these alkenes
`(CH_(3))_(2)C=CH_(2)(I), CH_(3)CH=CH_(2)(II) and `CH_(2)=CH_(2)(III)` when subject to acid - catalysed hydration?

A

`I gt II gt III`

B

`I gt III gt II`

C

`III gt II gt I`

D

`II gt I gt III`

Text Solution

Verified by Experts

The correct Answer is:
A
Acid catalysed hydration takes place according to Markownikoff’s rule which depends on the stability of carbocation formed.
`(CH_3)_2 overset(+)(C)-CH_3 gt CH_(3)-overset(+)(CH)-CH_(3) gt overset(+)(CH_2)-CH_(3)`
Order of stability
Hence the order of reactivity is
`I gt II gt III`
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