In Kjeldahl's method, organic N is estimated as

Q24 / 160 · AP EAMCET 2021 (25 Aug Shift 1) · Chemistry

In Kjeldahl's method, organic $\mathrm{N}$ is estimated as

A
nitrogen
Correct answer
B
ammonia
C
nitric acid
D
nitrogen dioxide

Solution

In Kjeldahl procedure, after digestion in concentrated sulphuric acid, the total organic $\mathrm{N}$ is converted to ammonium sulphate and ammonia is formed. When it is distilled into boric acid solution under alkaline conditions. It is a method for quantitative determination of nitrogen contained in organic substances plus the nitrogen contained in inorganic compounds.

Hence, the correct answer is option: 'B'.

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