v Correct At 25 °C phosphoric acid, H3PO4, has the following equilibrium constants: Ka 7.5 × 10-3 Part B K2 = 6.2 x 10-8 Ka 4.2 x 10–13 What is the pH of a solution of 0.550 mol L- K2HPO4, potassium hydrogen phosphate? Express your answer numerically to the hundredths place. v View Available Hint(s) Hint 1. Identify what reactions affect the \rm pH • Hint 2. Calculate \rm p{it K}_{a_2} Hint 3. Calculate \rm p{it K) {a_3} Πνα ΑΣφ ? pH =
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