Question

How long will it take 4.47 mL of Ne gas to effuse through a porous barrier if it has been observed that 382 minutes are required for 5.30 mL of Ar gas to effuse through the same barrier?

Answer 1

According to the Grahans law of diffusion:

This formula can be written as:

where:

Rate₁ is the rate of effusion of the first gas (volume or number of moles per unit time).

Rate₂ is the rate of effusion for the second gas.

M₁ is the molar mass of gas 1

M₂ is the molar mass of gas 2.

rate(r)= v/t v=volume,

t= time

Ne rate=4.47/time

Ar rate=5.36/382 Ne atomic weight=20

Ar atomic weight =40

time= 225.2 minutes.