Please determine the answer of the given question
Question- For the diprotic weak acid H2A, Ka1 = 2.8 × 10-6 and Ka2 = 7.5 × 10-9.
Part 1- What is the pH of a 0.0750 M solution of H2A?
Part 2- What are the equilibrium concentrations of H2A and A2- in this solution?
I need help to find the equilibrium concentrations of H2A.