An unknown compound (A) (molar mass = 180) on | vedclass

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(A) During acylation,each hydroxyl group $(-OH)$ is replaced by an acetyl group $(-COCH_3)$ with the loss of a hydrogen atom. The net increase in mola

Vedclass · Accepted Answer

$5$

Vedclass · Answer

(A) During acylation,each hydroxyl group $(-OH)$ is replaced by an acetyl group $(-COCH_3)$ with the loss of a hydrogen atom. The net increase in molar mass for each $-OH$ group is $(43 - 1) = 42 \ g/mol$.Let $n$ be the number of hydroxyl groups.The change in molar mass is given by: $\Delta M = n 	imes 42$.$\Delta M = 390 - 180 = 210$.$n = \frac{210}{42} = 5$.Therefore,the number of hydroxyl groups present in compound $(A)$ is $5$.

An unknown compound $(A)$ (molar mass $= 180$) on acylation gives a product (molar mass $= 390$). Find the number of hydroxyl group present in compound $(A)$.

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