Which law states that the total pressure exerted by a mixture of non-reactive gases is equal to the sum of their individual partial pressures?

💡 Solution & Explanation

Dalton's law of partial pressures asserts that within a mixture of chemically non-reactive gases, the total pressure exerted equals the arithmetic sum of the partial pressures of each individual gas component. Henry's law deals with gas solubility in liquids relative to partial pressure, whereas Graham's law governs the rates of gas effusion. This fundamental chemical principle is widely applied in respiratory physiology to calculate alveolar gas exchange pressures.