The Buffering capacity of a buffer | AIPGDEE MCQ with Explanations

The Buffering capacity of a buffer is maximum at pH equal to A. 0.5pKa  
B. pKa  
C. pKa+1  
D. 2pKa


Ans is B.
“At values close to pKa the buffer solution resists changes in pH most effectively.” • Buffers resist a change in pH when proteins are produced or consumed. • Maximum buffering capacity occurs at I pH unit on either side of pKa. • Physiologic buffers include bicarbonates, orthophosphates and proteins.