Which law states that when gases react together, they do so in volumes which bear a simple whole-number ratio to each other and to the volume of the products, provided all volumes are measured under the same conditions of temperature and pressure?

💡 Solution & Explanation

Gay-Lussac's law of combining volumes states that reacting gases combine in simple integer volume ratios under constant temperature and pressure conditions. Dalton's law relates total pressure of gas mixtures to the sum of individual partial pressures. Avogadro's law states that equal volumes of all gases under identical conditions contain equal numbers of molecules. Graham's law establishes that the rate of effusion of a gas is inversely proportional to the square root of its molar mass.