Question

Which of the following solutions containing weak acid and salt of its conjugate base has maximum buffer capaity?
A. `["Salt"] lt ["Acid"]`
B. `["Salt"] =["Acid"]`
C. `["Salt"] gt ["Acid"]`
D. `["Salt"] + ["Acid"]` is minimum

Answer 1

Correct Answer - B
Maximum buffer capacity, when `pH = pK_(a)`, and this is only possible when `["Salt"] = ["Acid"]`.