Problem: For the diprotic weak acid H2A, Ka1 = 33 x 10-4 and Ka2 = 89 x10-4.What is the pH of a 0.0800 M solution of H 2A? What are the equilibrium concentrations of H 2A and A2- in solution?

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For the diprotic weak acid H2A, Ka1 = 33 x 10-4 and Ka2 = 89 x10-4.

What is the pH of a 0.0800 M solution of H 2A? 

What are the equilibrium concentrations of H 2A and A2- in solution?