States of Matter and Gaseous StatemediumCOMPREHENSIVE

Flask with greater mean free path for the molecules ()States of Matter and Gaseous State Chemistry Question

Question

Flask with greater mean free path for the molecules ($r_{\text{H}_2} : r_{\text{CH}_4} : r_{\text{O}_2} = 1 : 2 : 2$)

Answer: C

💡 Solution & Explanation

Mean free path $\lambda \propto 1 / (N \sigma^2) \propto M / \sigma^2$. A ($2/1=2$), B ($16/4=4$), C ($32/4=8$). Flask C is highest. Therefore, correct answer is C.

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