CHEMISTRY · Subjective · A Level · Chemistry · Acids and bases · Acids and bases
Problem
A weak acid has pKa=5.0. Compare the relative concentrations of the protonated form (HA) and the deprotonated form (A−) when the acid is placed first in a solution of pH=4.0 and then in a solution of pH=6.0. Briefly describe how the predominance shifts.