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  4. ZnCl2 in Lucas reagent is

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Q. $ZnCl_2$ in Lucas reagent is

Alcohols Phenols and Ethers

Solution:

$\underset{\text{Lewis acid}}{ZnCl_2} + 2HCl \rightarrow H_2 ZnCl_4 \xrightarrow{ROH} R-O^+ H_2 \xrightarrow{Cl} RCl + H_2O$