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(a) Sketch and label the phase diagram of pure water (pressure versus temperature for pressure less than 1MPa ). By referring relevant Clapeyron equation for each phase transition, discuss the different in slope of each line. [6] (b) The molar volume of a solid compound is 78cm3mol1 at 1.00atm and 60C which is it melting temperature. The molar volume liquid at this temperature is 80cm3mol1. When the pressure was increase to 85atm the melting temperature changed to 62C. Calculate the enthalpy of fusion of the solid compound