A) \[r\propto \sqrt{d}\]
B) \[r\propto \sqrt{1/d}\]
C) \[r=d\]
D) \[r\propto d\]
Correct Answer: B
Solution :
According to Grahams law, the rate of diffusion of a gas is inversely proportional to the square root of its density, at constant temperature and pressure. Hence rate of diffusion, \[r\propto \sqrt{\frac{1}{d}}\]
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