At higher temperature, does the fraction of molecules with very high speeds increase or decrease? Why is this important for chemical reaction rates?
[ f(v) = 4\pi \left( \fracm2\pi k_B T \right)^3/2 v^2 e^-mv^2/(2k_B T) ]
Two gases, He and Xe, are at the same temperature. Sketch their M–B curves on the same axes. Which has a higher ( v_p )? Explain.
Why does ( v_rms ) matter in Graham’s law of effusion?