Consider an 50.0 mL analyte solution containing 0.50 g of KHP, titrated against 0.10 M sodium hydroxide, NaOH  (a) Based on the information you have for the hydrogen phthalate ion HP– and the fact that Kw = 1.0 × 10−14 at room temperature, what is the Kb of the phthalate ion P2–? Write the chemical equation that has a Kc equal to Kb you just calculated. (b) What is the pH of the solution at the equivalence point at room temperature? (c) Sketch the beaker again at 50% past the equivalence point. What is the pH of the solution at room temperature?

Chemistry: Principles and Reactions
8th Edition
ISBN:9781305079373
Author:William L. Masterton, Cecile N. Hurley
Publisher:William L. Masterton, Cecile N. Hurley
Chapter14: Equilibria In Acid-base Solutions
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Consider an 50.0 mL analyte solution containing 0.50 g of KHP, titrated against 0.10 M sodium hydroxide, NaOH 

(a) Based on the information you have for the hydrogen phthalate ion HP– and the fact that Kw = 1.0 × 10−14 at room temperature, what is the Kb of the phthalate ion P2–? Write the chemical equation that has a Kc equal to Kb you just calculated.

(b) What is the pH of the solution at the equivalence point at room temperature?

(c) Sketch the beaker again at 50% past the equivalence point. What is the pH of the solution at room temperature?

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