Question

if two gases X and Y have thier molecules travelling at velocities in the ratio of 3:1 , then the ratio of thier masses is

Answer 1

Answer :

Two gases X and Y have their molecules travelling at velocities in the ratio of 3:1.

We have to find the ratio of their molar masses$.$

★ Graham's law of diffusion : Under similar conditions of temperature and pressure, rates of diffusion of different gases are inversely proportional to the square root of their molar masses.

• r ∝ 1/√M

⭆ r₁/r₂ = √M₂/√M₁

ATQ, r₁ : r₂ = 3 : 1

⭆ 3/1 = √M₂/√M₁

⭆ M₁/M₂ = (1/3)²

⭆ M₁ : M₂ = 1 : 9

Cheers!