Question

what is duma Method ?​

Answer 1

$\red{\sf Question}$

What is Duma's Method ?

$\underline{\bf Answer}$

This method is based on the principle that a nitrogeneous organic compound , when heated with Cupric oxide in an atmosphere of Carbon dioxide and the gases evolved passed over heated copper gauze, gives a quantitative yield of Nitrogen gas . Therefore, by measuring the volume of nitrogen given by a known mass of the compound, percentage of nitrogen maybe calculated.

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$\rm \: C_xH_yN_z + CuO \longrightarrow xCO_2 + \frac{y}{2} H_2O$

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Answer 2

Answer:

The Dumas method of molecular weight determination was historically a procedure used to determine the molecular weight of an unknown substance. The Dumas method is appropriate to determine the molecular weights of volatile organic substances that are liquids at room temperature.

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