Kinetic-Molecular Theory Explains the Empirical Gas Laws: Explanation of Partial Pressures

James Richard Fromm

Dalton's Law of Partial Pressures follows as a consequence from the Kinetic Molecular Theory of Gases. If the gas molecules in a mixture are in constant random motion and there are no forces operating between molecules save by collision, then on the average the net effect of collisions with other molecules must be zero. For this reason each gas acts as if it were present alone.

Copyright 1997 James R. Fromm