Gaseous State

Ques. Pure O2 diffuses through an aperture in 224 seconds. whereas a mixture of O2 and another gas containing 80 % O2 diffuses from the same in 234 seconds.
What is the molecular weight of the gas?

1 Answers

Shubhodip ·

Proceed by the concept of effective molecular mass.

molecular mass = Weightnumber of moles

So assume that the molecular mass of the gas is M. So the effective molecular mass of the mixture will be = 2M + 8*3210

Now use grahams law. t2t1 = √MO2√Meff

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