A buffer solution is prepared such that the concentration of the conjugate base is…
CHEMISTRY · Single correct · A Level · Chemistry · Acids and bases · Acids and bases
Problem
A buffer solution is prepared such that the concentration of the conjugate base is ten times that of the weak acid. Which of the following best describes how the pH of the buffer compares to the pKa of the acid?
(a) The pH is equal to the pKa.
(b) The pH is one unit lower than the pKa.
(c) The pH is one unit higher than the pKa.
(d) The pH is approximately 2.3 units higher than the pKa.