What Is the PH of an Aqueous Solution That Contains

question 58

Multiple Choice

What is the pH of an aqueous solution that contains 0.085 M HNO₂ and 0.10 M potassium nitrite (KNO₂) ?
K _a(HNO₂) = 4.5×10 ^{- 4}

• A) pH = 3.27
• B) pH = 3.42
• C) pH = 4.28
• D) pH = 4.42
• E) pH = 7.87