Question

According to Graham's law, at a given temperature the ratio of the rates of diffusion  r_A/r_B of gases A and B is given by

(a) (p_A/p_B)(M_A/M_B)^1/2

(b) (M_A/M_B)(p_A/p_B)^1/2

(c)  (p_A/p_B)(M_B/M_A)^1/2

(d) (M_A/M_B) (p_B/p_A)^1/2

(where p and M are Pressures and molecular  weights of gases A and B respectively)

Answer 1

Correct option (c)   (p_A/p_B)(M_B/M_A)^1/2

Explanation:

According to Graham's law of diffusion