Consider die titration of 50.0 mL of 0.10 M H3A (Ka1 = 5.0 × 10° K2 = 1.0 × 10-8, Ka3 = 1.0 × 10-12) titrated by 0.10 M KOH. a. Calculate the pH of the resulting solution at 125 mL of KOH added. b. At what volume of KOH added does pH= 3.30? c. At 75.0 mL of KOH added, is the solution acidic or basic?

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Chapter15: Acid-base Equilibria
Section: Chapter Questions
Problem 88AE: Consider die titration of 50.0 mL of 0.10 M H3A (Ka1 = 5.0 104, Ka2 = 1.0 108, Ka3 = 1.0 1012)...
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Consider die titration of 50.0 mL of 0.10 MH3A (Ka1 = 5.0 × 10¯*,
K22 = 1.0 × 10-8, K3 = 1.0 × 10¬12) titrated by 0.10 M KOH.
a. Calculate the pH of the resulting solution at 125 mL of
KOH added.
b. At what volume of KOH added does pH = 3.30?
c. At 75.0 mL of KOH added, is the solution acidic or basic?
Transcribed Image Text:Consider die titration of 50.0 mL of 0.10 MH3A (Ka1 = 5.0 × 10¯*, K22 = 1.0 × 10-8, K3 = 1.0 × 10¬12) titrated by 0.10 M KOH. a. Calculate the pH of the resulting solution at 125 mL of KOH added. b. At what volume of KOH added does pH = 3.30? c. At 75.0 mL of KOH added, is the solution acidic or basic?
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