Calculate the pH after 0. 010 mole of gaseous HCl is added to 250. 0 mL of each of the following buffered solutions.
a. 0. 050 M NH₃/0. 15 M NH₄Cl
b. 0. 50 M NH₃/1. 50 M NH₄Cl
Do the two original buffered solutions differ in their pH or their capacity? What advantage is there in having a buffer with a greater capacity?