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If you mix 200 mL of 0.10 M H3PO4 and 300 mL of 0.20 M NaH2PO4 and then adjust the pH of the solution to

If you mix 200 mL of 0.10 M H3PO4 and 300 mL of 0.20 M NaH2PO4 and then adjust the pH of the solution to 7.40 and bring to a final volume of 1.00 liters, what are the equilibrium values of [H3PO4], [H2PO4-], [HPO4-2], and [PO4-3]? (pK1 = 2.12, pK2 = 7.21, pK3 = 12.32)

Please include all equilibrium values in answer.

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