Which of the following variables directly influence the absolute rate of effusion of an ideal gas es — States of Matter and Gaseous State Chemistry Question

💡 Solution & Explanation

The rate of effusion $r$ is given by the general equation $r \propto (P \cdot A) / \sqrt{M \cdot T}$. Thus, it depends directly on pressure ($P$) and orifice area ($A$), and inversely on the square roots of molar mass ($M$) and temperature ($T$).