Question

A mixture of gases at 20 degrees Celsius contains nitrogen at 200 mm Hg, hydrogen at 100 mm Hg, ammonia at 230 mm Hg, methane at 120mm Hg and helium at 70 mmHg. What is the partial pressure of the non combustible gas in the mixture?

A. 200 mm Hg

B. 430 mm Hg

C. 70 mm Hg

D. 270 mm Hg

Answer 1

Partial pressure of a mixture is sum of partial pressure of individual gases.

Here in given question helium and nitrogen are non combustible so their total partial pressure will be 200 mm + 70 mm = 270 mm.

OPTION D IS CORRECT.

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