The value of n in the given reaction is: | vedclass

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(A) The given compound is $1,3,5$-trimethoxybenzene. When an ether reacts with excess $HI$,the $C-O$ bond is cleaved to form an alcohol and an alkyl i

Vedclass · Accepted Answer

$3$

Vedclass · Answer

(A) The given compound is $1,3,5$-trimethoxybenzene. When an ether reacts with excess $HI$,the $C-O$ bond is cleaved to form an alcohol and an alkyl iodide. In the case of $1,3,5$-trimethoxybenzene,there are three methoxy $(-OCH_3)$ groups attached to the benzene ring. Each methoxy group reacts with one molecule of $HI$ to form a phenolic $-OH$ group and one molecule of methyl iodide $(CH_3I)$. The reaction is: $C_6H_3(OCH_3)_3 + 3HI \rightarrow C_6H_3(OH)_3 + 3CH_3I$. Thus,$3$ moles of $HI$ are required for the complete cleavage of the three methoxy groups. Therefore,the value of $n$ is $3$.

The value of $n$ in the given reaction is:

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