Calculate the change in pH when 3.00 mL of 0.100 M HCl(aq) is added to 100.0 mL of a buffer solution that is 0.100 M in NH_3(aq) and 0.100 M in NH_4Cl(aq). A list of ionization constants can be found here. Delta pH = 9.234 Calculate the change in pH when 3.00 mL of 0.100 M NaOH(aq) is added to the original buffer solution. Delta pH = 9.28