Question

equal weights of methane & hydrogen are mixed in an empty container at 25 degree Celsius. The fraction of total pressure exerted by hydrogen is?

Answer 1

Molar ratio of CH4 : H2 = 16 : 2 = 8 : 1 (Mixed in equal quantities)

Pressure is directly proportional to number of moles.

Methane is 8/9 of total no. of moles.

So,

Fraction of pressure by CH​4 = 8/9

Answer 2

Molar ratio of CH4 : H2 = 16 : 2 = 8 : 1 (Mixed in equal quantities)

Pressure is directly proportional to number of moles.

Methane is 8/9 of total no. of moles.

So,

Fraction of pressure by CH​4 = 8/9

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