You have 630 mL of a buffer solution containing 0.68 M hydrocyanic acid (HCN) and 0.57 M potassium cyanide (KCN). What i

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You have 630 mL of a buffer solution
containing 0.68 M hydrocyanic acid (HCN) and
0.57 M potassium cyanide (KCN). What is
the pH of this solution after the addition of
10.0 mL of 1.00 M NaOH?
The Ka of the weak acid is 4.9 ×
10−10.
Hint: You can use the Henderson-Hasselbalch Equation to
solve for pH. Report your answer to TWO places past the
decimal.