Problem 2.229

How does the mean free path $\lambda$ and the number of collisions of each molecule per unit time $v$ depend on the absolute temperature of an ideal gas undergoing (a) an isochoric process; (b) an isobaric process?

\text { (a) } \lambda=\text { const, } v \propto \sqrt{T} ;(b) \lambda \propto T, v \propto 1 / \sqrt{T} \text { . }

Transport Phenomena