A laboratory technician prepares four aqueous mixtures at 25 °C
CHEMISTRY · Single correct · A Level · Chemistry · Acids and bases · Acids and bases
Problem
A laboratory technician prepares four aqueous mixtures at 25 °C, each by combining the stated volumes of 0.10 M acetic acid, HC₂H₃O₂, and 0.10 M NaOH. In which mixture will the resulting solution best resist changes in pH when a small amount of strong acid or base is added?
(a) I only
(b) IV only
(c) II only
(d) I and II