Читать книгу Geochemistry - William M. White - Страница 100

Having placed another tool, the chemical potential, in our thermodynamic toolbox, we are ready to continue our consideration of solutions. We will begin with ideal solutions, which, like ideal gases, are fictions that avoid some of the complications of real substances. For an ideal solution, we make an assumption similar to one of those made for an ideal gas, namely that there are no forces between molecules. In the case of ideal solutions, which may be gases, liquids, or solids, we can relax this assumption somewhat and require only that the interactions between different kinds of molecules in an ideal solution are the same as those between the same kinds of molecules.