Upon quantitative reaction with nitrous acid () at standard temperature and pressure (STP), an unknown primary -amino acid actively liberates which specific gas?

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Question

Upon quantitative reaction with nitrous acid ($HNO_2$) at standard temperature and pressure (STP), an unknown primary $\alpha$ -amino acid actively liberates which specific gas?

Prashant Kotian · Accepted Answer

Correct answer: C. Primary aliphatic amines, including the -amino group of amino acids, react with nitrous acid () to quantitatively evolve nitrogen () gas.

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