When a buffer system forms a weak acid from a strong acid:
A)the pH is lowered only slightly, instead of greatly
B)the pH is raised only slightly, instead of greatly
C)the pH is raised only slightly, because more hydrogen ions are produced
D)all of these are possible, depending on the particular reaction

Question

Quizplus · Accepted Answer

In a buffer system formed with a weak acid and its conjugate base, when a strong acid is added to the system, the weak acid will react with the hydrogen ions from the strong acid to form its conjugate base. This reaction consumes some of the hydrogen ions, resulting in only a slight decrease in pH instead of a significant decrease. Therefore, the best choice is A.

When a Buffer System Forms a Weak Acid from a Strong