Calculate the PH of the Solution Resulting from the Addition

question 46

Multiple Choice

Calculate the pH of the solution resulting from the addition of 75.0 mL of 0.15 M KOH to 35.0 mL of 0.20 M HCN (K_a (HCN) = 4.9 × 10^-10) .

• A)9.31
• B)9.18
• C)9.52
• D)11.63
• E)12.59