Question

Bases on Graham's law of diffusion, how does the speed of diffusion of neon (M=20.2) compare to the Krpton (M=83.8)

Answer 1

2.037.

Step-by-step explanation:

• Thomas Graham found that, at a constant temperature and pressure the rates of effusion of various gases are inversely proportional to the square root of their masses.

∨ ∝ 1/√M.

Where, ∨ is the rate of diffusion.

M is the molar mass of the gas.

• For Ne and Kr:

(∨)Ne/(∨)Kr = √(M of Kr/M of Ne) = √(83.8 / 20.2) = 2.037.