Which among the following has rate of effusion less than the moist air? — States of Matter and Gaseous State Chemistry Question

💡 Solution & Explanation

dry air (m ≈ 28.9) is heavier than moist air because water vapour (m = 18) reduces average molar mass. since rate of effusion is inversely ∝ √m, the heavier dry air effuses slower than moist air.