What Is the Hydroxide-Ion Concentration of a 0

question 47

Multiple Choice

What is the hydroxide-ion concentration of a 0.190 M sodium oxalate (Na₂C₂O₄) solution? For oxalic acid (H₂C₂O₄) ,K_a1 = 5.6 × 10^-2 and K_a2 = 5.1 × 10^-5.(K_w = 1.01 × 10^-14)

• A) 6.1 × 10^-6 M
• B) 1.0 × 10^-7 M
• C) 7.9 × 10^-2 M
• D) 3.1 × 10^-3 M
• E) 1.8 × 10^-7 M

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