A compound (x) with molar mass 108g mol ^ - 1 undergoes acetylation to give product with molar mass 192g mol ^ - 1 . The number of amino groups in the compound (x) is ________.

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The compounds like amines and alcohols undergo acetylation with acetyl chloride. During this reaction, one proton of amine or alcohol is replaced with one acetyl group( ${CH}_{3}CO -$ ).

A compound (x) with molar mass 108g mol ^ - 1 undergoes acetylation to give product with molar mass 192g mol ^ - 1 .

The molar mass of the acetyl group is $43g / mol$ . The increase in molar mass due to one acetyl group is $43 - 1 = 42g / mol$ .

The molar mass of reactant is $108g / mol$ . The molar mass of product is $192g / mol$ . The change in mass is $84 .$

Hence, the number of acetyl groups $= \dfrac{84}{42} = 2$

A compound (x) with molar mass 108g mol ^ - 1 undergoes acetylation...

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