Question

If the rate of diffusion of a gas X is 3 times greater than the rate of diffusion of O2 gas,find the molar mass of X gas

Answer 1

Answer:

16/9 g

Explanation:

by Graham's law of diffusion

ratio of Rate of diffusion is inversely proportional to square root of molar mass

Let the molar mass of the unknown gas be M g.

let diffusion of O2 be x and the other be 3x

therefore,

x/3x = √M/√16

=> 1/3 = √M/√16

=> 1/9 = M/16 ( squaring both sides)

=> M = 16/9