What Is the Hydronium-Ion Concentration of a 0

question 56

Multiple Choice

What is the hydronium-ion concentration of a 0.210 M oxalic acid,H₂C₂O₄,solution? For oxalic acid,Ka₁ = 5.6 × 10^-2 and Ka₂ = 5.1 × 10^-5.

• A)8.4 × 10^-2 M
• B)1.1 × 10^-1 M
• C)1.0 × 10^-7 M
• D)3.2 × 10^-3 M
• E)3.3 × 10^-3 M

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