Amagat's law

English

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Amagat's law

Wikipedia

Proposed by French physicist Émile Amagat.

(physical chemistry) A gas law stating that the volume of a gas equals the sum of the volumes of all of the component gases, if they were separated but kept at the same temperature and pressure.

Examples
If 1L of water vapour and 1L of CO₂ are combined, keeping temperature and pressure constant, then the volume of the mixture will be 2L.