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  4. Reagent, 1-naphthylamine and sulphanilic acid in acetic acid is used for the detection of

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Q. Reagent, 1-naphthylamine and sulphanilic acid in acetic acid is used for the detection of

JEE MainJEE Main 2021Amines

Solution:

For detection of $NO _{2}^{-}$, the following test is used.

$NO _{2}^{-}+ CH _{3} COOH \rightarrow HNO _{2}+ CH _{3} COO ^{-}$

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