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

question 72

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

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