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19 Chemical Thermodynamics Solutions to Exercises (a) G at 298 K = 269.3 kJ 298 K = 218.07 218.1 kJ In K 6.0 10⁻³⁹; 10⁻³⁹ atm (b) 19.84 K = Calculate at the two temperatures using = and then calculate K and (a) = At 673 K, 88.3 = -13.525 (b) 19.85 Analyze/Plan. Given an acid dissociation equilibrium and the corresponding value, calculate and for a given set of concentrations. Use Equation [19.20] to calculate and Equation [19.19] to calculate Solve. (a) 1L (b) (c) = at equilibrium (d) 0.20 19.86 (a) (b) = -RT In Kb = -(8.314 In (4.4 = 19.148 kJ 598