Which of the following mathematical equations are valid expressions derived from Graham's Law of Dif — States of Matter and Gaseous State Chemistry Question

💡 Solution & Explanation

Option A is the fundamental statement involving vapour density ($d$). Option B incorporates the effect of partial pressures. Option C relates time ($t$) and volume ($V$) diffused: $r = V/t$, so $(V_1/t_1)/(V_2/t_2) = \sqrt{M_2/M_1}$, which rearranges to C. Option D is inverted and thus incorrect.