Determine the Concentration of CO₃^2- Ions in a 0

question 51

Multiple Choice

Determine the concentration of CO₃^2- ions in a 0.18 mol L^-1 H₂CO₃ solution. Carbonic acid is a diprotic acid with K_a1 = 4.3 × 10^-7 and K_a2 = 5.6 × 10^-11.

• A) 2.8 × 10^-4 mol L^-1
• B) 3.2 × 10^-6 mol L^-1
• C) 5.6 × 10^-11 mol L^-1
• D) 4.3 × 10^-7 mol L^-1
• E) 6.9 × 10^-8 mol L^-1

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