A buffered solution is prepared by mixing 100.0 mL of 0.250 M NH3(aq) and 150.0mL of 0.200 M NH4NO3(aq).
a) Calculate the pH of this buffer. Assume that the volumes of the two mixed dilute aqueous solutions are additive.
b) What will the pH become after 0.63 g HNO3 is added to the buffered solution?