(a) A student mixed 200 mL of 0.15 M ammonium chloride, NH4Cl, with 200 mL of 0.23 M ammonia solution, NH3.
i) Calculate the pH value of the mixture.
ii) Calculate the concentrations of OH- in the mixture. [Kb for NH3 = 1.8 x 10^-5]
(b) Consider a titration between HNO3 and NH3.
i) Write the reaction equation for this titration.
ii) Sketch the titration curve if the burette contains NH3 and the conical flask contains HNO3.
iii) Classify the salt as neutral, acidic, or basic.