question_answer

Buffer capacity of a buffer solution is defined as:

A)  number of moles of an acid or base when added to 100 ml of buffer solution causing no change in its pH value

B)  number of moles of an acid (or base) when added to a solution causing to change in its pH by one

C)  number of units pH that changed by adding 1 N acid or base to one litre of a buffer solution

D)  number of moles of an acid or base when added to a litre of buffer solution causing no change \[i-\] its pH value