Which of the following factors most directly increases the capacity of a buffer…
CHEMISTRY · Single correct · A Level · Chemistry · Acids and bases · Acids and bases
Problem
Which of the following factors most directly increases the capacity of a buffer solution to resist a change in pH when small amounts of strong acid or base are added?
(a) Having equal concentrations of the conjugate acid and conjugate base present, regardless of their magnitude
(b) Using a weak acid that has an extremely small Ka value
(c) Large absolute concentrations of both the conjugate acid and conjugate base present in the solution
(d) Mixing equal volumes of a strong acid and a strong base solution, whatever their concentrations