Question

A certain gas diffuses from two different vessels A and B. The vessel A has a circular orifice while vessel B has a square orifice of length equal to the radius of the orifice of vessel A. The ratio of the rates of diffusion of the gas from vessel A to vessel B, assuming same temperature and pressure is;

• A. π
• B. 1/π
• C. 1:1
• D. 2:1

Answer 1

Answer: (A)

π

Answer 2

The rate of diffusion is directly proportional to the area of orifice.

∴ d_A α πr²

d_B α r²

∴ $\frac{d_{A}}{d_{B}}$= π