Question

4a. If 34.00 mL of 0.250 M methylamine, (Kb = 5.0 x 10-M at 25°C) is titrated with 0.500 M HCIO4, what is the pH of the equivalence point? [6 marks] 4b. For the reaction below, AH° = -275.4 kJ and AS™ = -263.45 J/K at 25°C. [4 marks] a) Calculate AG for the reaction at 25°C and when Pso = 1 x 10 atm and P = 0.10 atm. b) Is this reaction spontaneous under these conditions? Show all necessary reasoning to support your answer. SO2(g) + H2O(l) + 102(g) → H2SO4(1)