... between the number of components, C, the number of phases, P, and the number of degrees of freedom, F, in some equilibrium thermodynamic system:F = C – P + 2 in the case of varying temperature ... independently. In the case of the arbitrarily chosen temperature, the compositions of the phases are fixed, and in the case of the arbitrarily chosen composition of one of the phases at a given ... binary system (i.e., at C = 2) at a constant pressure, the independent variables can be the temperature and the concentration of one of the components. If P = 1, then F = 2, which means that, in...