A buffer is made up of 355 mL each of 0.200 M NaHCO3 and 0.134 M Na2CO3. Assuming that volumes are additive, calculate
(a) the pH of the buffer.
(b) the pH of the buffer after the addition of 0.0300 mol of HCl to 0.710 L of buffer.
(c) the pH of the buffer after the addition of 0.0300 mol of KOH to 0.710 L of buffer.
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