Читать книгу Geochemistry - William M. White - Страница 94

Another useful approximation occurs when X_i approaches 0. In this case, the partial pressures are not equal to the mole fraction times the vapor pressure of the pure substance, but they do vary linearly with X_i. This behavior follows Henry's law,* which is:

(3.10)

where h is known as the Henry's law constant.