Partial Pressures

The pressure exerted by a certain gas in a mixture. This was first published by John Dalton in 1801.

Dalton′s law of partial pressures states: The total pressure of a mixture of gases, which do not interact chemically, is equal to the sum of the partial pressures. The sum of the pressures that each gas would exert if it alone occupied the volume containing the mixture.

See also: Henry′s Law, Mixture.