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For the diprotic weak acid H2A, Ka1 = 2.8 × 10-6 and Ka2 = 5.9 ×...

For the diprotic weak acid H2A, Ka1 = 2.8 × 10-6 and Ka2 = 5.9 × 10-9. What is the pH of a 0.0750 M solution of H2A? What are the equilibrium concentrations of H2A and A2– in this solution?

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Answer #1

What is the pH of a 0.0750M solution of H2A?

H2A + H2O    H3O+ + HA-

0.0750 0 0

0.0750-x x x

What are the equilibrium concentrations of H2A and A2- in this solution?

HA- + H2O H3O+ + A2-

0 0
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