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12.22. Differentiate between the principle of estimation of nitrogen in an organic compound by (i) Dumas method (ii) Kjeldahl’s method.

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    Vishal Baghel | Contributor-Level 10

    5 months ago

    (i) Dumas method: The nitrogen containing organic compound, when heated with copper oxide in an atmosphere of carbon dioxide, yields free nitrogen in addition to carbon dioxide and water

    (ii)Kjeldahl's method: A known mass of the organic compound is heated strongly with conc. H2SO4,  a little potassium sulphate and a little mercury (a catalyst). As a result, the nitrogen present in the organic compound is converted to ammonium sulphate.

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