(a) Use the van’t Hoff equation in .120 to derive the

Chapter 15, Problem 122AP

(choose chapter or problem)

(a) Use the van’t Hoff equation in 15.120 to derive the following expression, which relates the equilibrium constants at two different temperatures: How does this equation support the prediction based on Le Châtelier’s principle about the shift in equilibrium with temperature? (b) The vapor pressures of water are 31.82 mmHg at 30°C and 92.51 mmHg at 50°C. Calculate the molar heat of vaporization of water.

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