Aniline. a weak base, reacts with water according to the reaction represented below CH3NH + H2O rightarrow C5H5NH3 + OH Write the equilibrium constant expression Kb. for the reaction represented above. (3) A sample of aniline Is dissolved in water to produce 25.0 mL of a 0.10M solution. The pH of the solution is 8.82 Calculate the equilibrium constant Kt, for the reaction. (6) The solution prepared in part (b) is titrated with 0.10M HCI. Calculate the pH of the solution when 5 OmL of the acid has been added. (8) Calculate the pH at the equivalence point of the titration in part c (8) The pKa values for several indicators are given below Which of the indicators l:sted is most suitable for this tetragon? Justify your answer.