A 250.0 mL buffer contains 0.25 M HA and 0.25 M NaA (pKa = 4.75)
CHEMISTRY · Subjective · A Level · Chemistry · Acids and bases · Acids and bases
Problem
A 250.0 mL buffer contains 0.25 M HA and 0.25 M NaA (pKa = 4.75). Calculate the minimum number of moles of HCl(g), assumed to dissolve completely, that must be added so the buffer’s pH decreases by exactly 1.00 unit.