At 25 degrees c phosphoric acid h3po4 has the following, Ask an Expert

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At 25 degrees C phosphoric acid, H3PO4, has the following equilibrium constants: Ka1 = 7.5 X 10-3 Ka2 = 6.2 X 10-8 Ka3 = 4.2 X 10-13 a)What is the pH of a solution of 0.700 M K2HO4, potassium hydrogen phosphate? b)What is the pH of a solution of 0.450 M KH2PO4, potassium dihydrogen phosphate?

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