Problem

The process of Fig. 9.6 enables calculation of ΔmixG.(a) Find expressions for ΔG of each s...

The process of Fig. 9.6 enables calculation of ΔmixG.

(a) Find expressions for ΔG of each step in Fig. 9.6, assuming all gases are ideal. To find ΔG4, use a result stated at the end of Sec. 6.1 and derived in Prob. 9.20.


(b) Explain why ΔG1 and ΔG6 are quite small unless P is very high.


(c) Show that if ΔG1 and ΔG6  are assumed negligible, then


(d) Verify that if Raoult’s law is obeyed, (9.74) reduces to the ideal-solution ΔmixG equation.

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Solutions For Problems in Chapter 9