If PK_a1 and PK_a2 for H₂CO₃ Are 6

Multiple Choice

If pK_a1 and pK_a2 for H₂CO₃ are 6.37 and 10.25,respectively,calculate the equilibrium constant for the reaction below: H₂CO₃(aq) + 2H₂O(l) ↔ 2H₃O⁺(aq) + CO₃^2(aq)

A) 4.1  10^11
B) 4.3  10^7
C) 5.6  10^11
D) 2.3  10^8
E) 2.4  10^17