Dalton's Law vs, Amagat's Law for the Mixture of Real Gases
- Issue Date
- SNU Journal of Education Research, vol.5, pp. 127-134
- We are familiar with English scientist John Dalton who proposed the existence of atoms. He also found the law of partial pressure from his experiment on the mixture of gases. Actually Dalton performed the above gas experiment in order to suggest the atomic theory of matter. In modern terminology a fundamental property of gas mixtures discovered by Dalton (1801) is: the pressure of a mixture of gases is equal to the sum of the pressures each of its components would exert if alone in the volume of the mixture at the same temperature. Thus Dalton's law implies that each component acts independently in its contribution to the total pressure, or, more picturesquely, that "every gas is a vacuum to every other gas." Dalton's law can be stated more concisely in terms of partial pressure. Thus Dalton's law can be written.