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Law of Combining Volumes Definition

Chemistry Glossary Definition of Law of Combining Volumes


Definition: A relation stating that the relative volumes of gases in a chemical reaction are present in the ratio of small integers (assuming all gases are at the same temperature and pressure).

Also Known As: Gay-Lussac's Law

Examples: In the reaction

2 H2(g) + O2(g) → 2 H2O(g)

2 volumes of H2 react with 1 volume of O2 to produce 2 volumes of H2O.

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