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Compare the rate of dehydration of the f...

Compare the rate of dehydration of the following alcohols `(I) Ph-underset(Ph)underset(|)C-CH_2-OH `
`(II) Ph -overset(OH)overset(|)CH-CH_3`

A

`I lt II gt III gt IV`

B

`IV gt I gt II gt III`

C

`IV gt II gt III gt I`

D

`I gt IV gt III gt II`

Text Solution

Verified by Experts

The correct Answer is:
C
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CH_(3)-underset(CH_(3))underset(|)(CH)-CH=CH-CH_(2)-overset(O)overset(||)(C)-OH

The releative rate or acid catalyssed dehydration of following alcohols would be: (P) Ph-overset(CH_(3))overset(|)(C)-underset(OH)underset(|)(CH)-CH_(3) (Q) Ph-overset(CH_(3))overset(|)(C)-CH_(2)-CH_(2)-OH (R ) Ph--underset(OH)underset(|)overset(CH_(3))overset(|)(CH)-CH_(2)CH_(3) Ph--underset(CH_(3))underset(|)overset(CH_(3))overset(|)(CH)-CH_(2)OH

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Which of the following is the correct ease of dehydration ? I CH_(3) - CH_(2)-CH_(2)-underset(OH)underset(|)(CH_(2)) , II CH_(3)-CH_(2)-overset(OH)overset(|)(CH)-CH_(3) , III CH_(2) = CH -overset(OH)overset(|)(CH)-CH_(3) , IV