pH of a buffer and buffer capacity(Continued) Buffer capacity is how much acid or base the buffer can tolerate while maintaining the pH( within a 1.00 unit) Buffer capacity is determined by the concentration of the buffer acid and its conjugated base, as well as their concentration ratio 12-0.8-0.400.40.81.2 log CNaA CHApH of a buffer and buffer capacity (Continued) • Buffer capacity is how much acid or base the buffer can tolerate while maintaining the pH (within a 1.00 unit). • Buffer capacity is determined by the concentration of the buffer acid and its conjugated base, as well as their concentration ratio