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27) For the diprotic weak acid H2A, Ka1 = 3.9 × 10-6 and Ka2 = 6.6...

27)

For the diprotic weak acid H2A, Ka1 = 3.9 × 10-6 and Ka2 = 6.6 × 10-9.

What is the pH of a 0.0700 M solution of H2A? What are the equilibrium concentrations of H2A and A2– in this solution?

pH= __

[H2A]= ____

[A2-]= ____

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