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The compound which give the most stable ...

The compound which give the most stable carbonium ion on dehydration is

A

`CH_(3)CH(CH_(3))CH_(2)OH`

B

`(CH_(3))_(3)COH`

C

`CH_(2)=CHCH_(2)CH_(2)OH`

D

`CH_(3)CHOHCH_(2)-CH_(3)`

Text Solution

Verified by Experts

The correct Answer is:
b
`underset("Tertiary")(CH_(3))_(3)C underset(" Alcohol")(-OH) underset(-H_(2)O)overset(+H^(+))rarr underset("more stable") underset(3^(@) "carbocation")((CH_(3))_(3) overset(+)(C))`
`CH_(2) = CH - CH_(2) - CH_(2)OH underset(-H_(2)O)overset(+H^(+))rarr CH_(2) = underset(("less stable"))underset(1^(@)"carbocation)(CH)- CH_(2) - overset(+)(C)H_(2)`
Increasing order of stability of carbocation is `1^(@)` carbocation `lt 2^(@)` carbocation `lt 3^(@)` carbocation
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