The order of reactivity of following alcohols with halogen acids is ______
(I) $C H_{3} C H_{2} - C H_{2} - O H$

(II) $C H_{3} C H_{2} - (C H_{3}) C H - O H$

(III) $C H_{3} C H_{2} - C H_{3} | C | C H_{3} - O H$

(I) > (II) > (III)

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(III) > (II) > (I)

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(II) > (I) > (III)

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(I) > (III) > (II)

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Solution

The correct option is C (III) > (II) > (I)

Order of reactivity of alcohol with halogen is in accordance with the stability of carbocation formed. More stable the carbocation, more will be reactivity of alcohol with halogen acid.

The order of stability of carbocation is:
$3^{o} > 2^{o} > 1^{o}$

Option B is correct.

Suggest Corrections

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