A chemist titrates 170.0 mL of a 0.7119 M hydrocyanic acid (HCN) solution with 0.5577 M NaOH solution at 25 °C. Calculate the

Question

A chemist titrates 170.0 mL of a 0.7119 M hydrocyanic acid (HCN) solution with 0.5577 M NaOH solution at 25 °C. Calculate the pH at equivalence. The PKa ,of hydrocyanic acid is 9.21.
Round your answer to 2 decimal places.
Note for advanced students: you may assume the total volume of the solution equals the initial volume plus the volume of NaOH solution added.

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