Question

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Q.9. Explain Duma's method of estimation of nitrogen under the following heads:
(i) Principle and method, (ii) Labelled diagram, (iii) Observation and calcula-​

Answer 1

Explanation:

The analysis of total nitrogen in an organic matrix can be carried out using the Dumas method (1831). This involves a total combustion of the matrix under oxygen. The gases produced are reduced by copper and then dried, while the CO2 is trapped. The nitrogen is then quantified using a universal detector.