# Problem: a. Calculate the pH of 0.250 L of a 0.36 M formic acid-0.30 M sodium formate buffer. Express your answer using three significant figures.   b. After the addition of 0.0050 mol of NaOH. Assume that the volume remains constant. Express your answer using three significant figures.   c. After the addition of 0.0050 mol of HCl. Assume that the volume remains constant. Express your answer using three significant figures.

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###### Problem Details

a. Calculate the pH of 0.250 L of a 0.36 M formic acid-0.30 M sodium formate buffer.

b. After the addition of 0.0050 mol of NaOH. Assume that the volume remains constant.