What does law of partial pressures mean?
• LAW OF PARTIAL PRESSURES (noun) The noun LAW OF PARTIAL PRESSURES has 1 sense: 1. (chemistry and physics) law stating that the pressure exerted by a mixture of gases equals the sum of the partial pressures of the gases in the mixture; the pressure of a gas in a mixture equals the pressure it would exert if it occupied the same volume alone at the same temperature Familiarity information: LAW OF PARTIAL PRESSURES used as a noun is very rare.