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- DictionaryPar·tial pres·sure/ˈpärSHəl ˈpreSHər/
noun
- 1. the pressure that would be exerted by one of the gases in a mixture if it occupied the same volume on its own.
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- Partial pressure
Hypothetical pressure of gas if it alone occupied the volume of the mixture at the same temperature
In a mixture of gases, each constituent gas has a partial pressure which is the notional pressure of that constituent gas as if it alone occupied the entire volume of the original mixture at the same temperature. The total pressure of an ideal gas mixture is the sum of the partial pressures of the gases in the mixture (Dalton's Law). The partial pressure of a gas is a measure of thermodynamic acti... Wikipedia
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