Question 4 Calculate the heat required to form a liquid solution at 1356 K starting with 1 mole ofCu and 1 mole of Ag at 298 K. At 1356 K the molar heat of mixing of liquid Cu andliquid Ag is given by Data:

Question 5 (a) Derive an expression for . in terms of the state variables, including I, P, S, V, and the measurable properties of the system, including the heat capacities, and C,, the isobaric thermal expansivity, a, and the isothermal compressibility, B. A is the Helmholtz free energy defined as U - TS.

Question 4
Calculate the heat required to form a liquid solution at 1356 K starting with 1 mole of
Cu and 1 mole of Ag at 298 K. At 1356 K the molar heat of mixing of liquid Cu and
liquid Ag is given by
Data:

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