Question

Vessel of volume 100ml contains 10% of oxygen and 90% of an unknown gas. the gases diffuse in 86 sec. through a small hole of vessel. if pure oxygen diffuse in 75 sec. under the
same condition. find the molecular weight of the gas.

Answer 1

Answer:

Graham's law of diffusiuon says -- the rate of diffusion of a gas is inversely proportional to the square root of it’s density or molecular weights. If r1 and r2 are the rates of diffusion of two gases, whose densities under the given conditions are d1 and d2 respectivel