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Question: The alcohol that produces turbidity immediately with\(\mathrm { ZnCl } _ { 2 } +\) conc. HCl at room...

The alcohol that produces turbidity immediately withZnCl2+\mathrm { ZnCl } _ { 2 } + conc. HCl at room temperature

A

1-hydroxybutane

B

2-hydroxybutane

C

2-hydroxy-2-methylpropane

D

1-hydroxy-2-methylpropane

Answer

2-hydroxy-2-methylpropane

Explanation

Solution

(CH3)3C−OH+HCl→ Anhyd. ZnCl2+HCl\left( \mathrm { CH } _ { 3 } \right) _ { 3 } \mathrm { C } - \mathrm { OH } + \mathrm { HCl } \xrightarrow { \text { Anhyd. } \mathrm { ZnCl } _ { 2 } + \mathrm { HCl } }

(CH3)3C−Cl+H2O\left( \mathrm { CH } _ { 3 } \right) _ { 3 } \mathrm { C } - \mathrm { Cl } + \mathrm { H } _ { 2 } \mathrm { O } reacts immediately

(CH3)3CH−OH+HCl→ Anhyd. ZnCl2+HCl\left( \mathrm { CH } _ { 3 } \right) _ { 3 } \mathrm { CH } - \mathrm { OH } + \mathrm { HCl } \xrightarrow { \text { Anhyd. } \mathrm { ZnCl } _ { 2 } + \mathrm { HCl } }

(CH3)2CH−Cl+H2O\left( \mathrm { CH } _ { 3 } \right) _ { 2 } \mathrm { CH } - \mathrm { Cl } + \mathrm { H } _ { 2 } \mathrm { O } reacts after 5 min.

CH3CH2CH2−OH+HCl→ Anlyd. ZnCl2+HCl\mathrm { CH } _ { 3 } \mathrm { CH } _ { 2 } \mathrm { CH } _ { 2 } - \mathrm { OH } + \mathrm { HCl } \xrightarrow { \text { Anlyd. } \mathrm { ZnCl } _ { 2 } + \mathrm { HCl } }

CH3CH2CH2−Cl+H2O\mathrm { CH } _ { 3 } \mathrm { CH } _ { 2 } \mathrm { CH } _ { 2 } - \mathrm { Cl } + \mathrm { H } _ { 2 } \mathrm { O } 1o1 ^ { o } reacts only on heating.