What Is the PH of a 0

question 28

Multiple Choice

What is the pH of a 0.20 M KCN aqueous solution?
K _a(HCN) = 6.2×10 ^{- 10}

• A) pH = 2.74
• B) pH = 8.51
• C) pH = 9.05
• D) pH = 10.98
• E) pH = 11.26

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