Question

50 mL of hydrogen diffuses out through a small hole of a vessel, in 20 minutes. The time taken by 40 mL of oxygen to diffuse out is

(a) 32 minutes

(b) 64 minutes

(c) 8 minutes

(d) 12 minutes

Answer 1

The correct option is : (b) 64 minutes

Explanation:

Volume of hydrogen = 50 mL; Time for diffusion (t) = 20 min and volume of oxygen = 40 mL.

Rare of diffusion of hydrogen (r₁) = 50/20 = 2.5 mL/min

Rate of diffusion of oxygen (r₂) = 40/t mL/min

Since the molecular mass of hydrogen (M₁) = 2 and that of oxygen (M₂) = 32, therefore