A 033-Mol Sample of a Diprotic Acid,H₂A,is Dissolved in 250 ML

Multiple Choice

A 0.33-mol sample of a diprotic acid,H₂A,is dissolved in 250 mL of water.The K_a1 of this acid is 1.0 $\times$ 10^-5 and K_a2 is 1.0 $\times$ 10^-10.Calculate the concentration of A^2- in this solution.

A) 1.0 $\times$ 10^-5 M
B) 1.8 $\times$ 10^-3 M
C) 3.6 $\times$ 10^-3 M
D) 1.0 $\times$ 10^-10 M
E) 1.32 M