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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Polyproptic Acid Question - Chemistry

I Review I Constants I Periodic Table
Correct
At 25 °C phosphoric acid, H3 PO4, has the
following equilibrium constants:
Ka
7.5 x 10-3
Part B
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 Vrm p(it K)_{a_2}
Hint 3. Calculate Vrm p(it K)_{a_3}
Hν ΑΣφ
?
pH =
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Part C
What is the pH of a solution of 0.550 mol L KH2PO4, potassium dihydrogen phosphate?
P Pearson
Transcribed Image Text:I Review I Constants I Periodic Table Correct At 25 °C phosphoric acid, H3 PO4, has the following equilibrium constants: Ka 7.5 x 10-3 Part B 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 Vrm p(it K)_{a_2} Hint 3. Calculate Vrm p(it K)_{a_3} Hν ΑΣφ ? pH = Submit Request Answer Part C What is the pH of a solution of 0.550 mol L KH2PO4, potassium dihydrogen phosphate? P Pearson
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