True or false? (a) For a one-component system, the maximum number of phases that can coexist in equilibrium is three. (b) The equation dP/dT = ΔH/(T ΔV) is exact, (c) The equation d In P/dT = ΔHm/RT2 is exact, (d) When three phases coexist in equilibrium in a one-component system, one of the phases must be a gas, one must be a liquid, and one must be a solid. (e) For a one-component system, the most stable phase at a given T and P is the phase with the lowest Gm. (f) Solid H2O cannot exist at 100°C as a stable phase. (g) For a pure substance, the vapor pressure of the solid is equal to the vapor pressure of the liquid at the triple-point temperature. (h) Liquid water cannot exist at 1 atm and 150°C. (i) If phases α and β of a closed system are in equilibrium, then μα must equal μβ.
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