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

question 20

Multiple Choice

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

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

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