At what speed of the molecules, the value of the Maxwell distribution function f(c) for the temperat — States of Matter and Gaseous State Chemistry Question
Question
At what speed of the molecules, the value of the Maxwell distribution function f(c) for the temperature T will be the same as that of the temperature n times higher?
Answer: B
💡 Solution & Explanation
Equating f(C) at T and nT: (1/T)^3/2 e^(-MC^2/2RT) = (1/nT)^3/2 e^(-MC^2/2R(nT)) → n^3/2 = e^(MC^2/2RT × (1 - 1/n)). Taking natural log: 1.5 ln n = MC^2/2RT × (n-1)/n → C^2 = 3 R T n ln n / [M (n-1)] → C = √[(3RT n ln n) / (M(n-1))].
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