Calculate the Concentration of Bicarbonate Ion, HCO₃^-, in a 0

Multiple Choice

Calculate the concentration of bicarbonate ion, HCO₃^-, in a 0.0 10 mol L^-1 H₂CO₃ solution that has the stepwise dissociation constants K_a1 = 4.3 × 10^-7 and K_a2 = 5.6 × 10^-11.

A) 6.6 × 10^-5 mol L^-1
B) 4.3 × 10^-7 mol L^-1
C) 4.3 × 10^-9 mol L^-1
D) 5.6 × 10^-11 mol L^-1