An analytical chemist is titrating 60.6 mL of a 0.5600 M solution of formic acid (H,CO,) with a 0.3100 M solution of KOH. The p K, of formic acid is 3.74. Calculate the pH of the acid solution after the chemist has added 115. mL of the KOH solution to it. Note for advanced students: you may assume the final volume equals the initial volume of the solution plus the volume of KOH solution added. Round your answer to 2 decimal places.