At what pH are buffer systems most effective?
A)within 1 pH unit of the pKa value
B)within 2 pH units of the pKa value
C)within 3 pH units of the pKa value
D)within 4 pH units of the pKa value

Question

Quizplus · Accepted Answer

Buffer systems are most effective within 1 pH unit of the pKa value of the acid component of the buffer. This is because at this range, the buffer can effectively resist changes in pH by either donating or accepting protons.

At What PH Are Buffer Systems Most Effective