Answered: Determining the Ksp of Calcium…

Chemistry: An Atoms First Approach

2nd Edition

ISBN:9781305079243

Author:Steven S. Zumdahl, Susan A. Zumdahl

Publisher:Steven S. Zumdahl, Susan A. Zumdahl

Chapter15: Solubility And Complex Lon Equilibria

Section: Chapter Questions

Problem 79AE: Tooth enamel is composed of the mineral hydroxyapatite. The Ksp of hydroxyapatite, Ca5(PO4)3OH, is...

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Determining the Ksp of Calcium Hydroxide:

Ca(OH)₂ (s) ↔ Ca²⁺ (aq) + 2OH^– (aq)

K_sp = [Ca²⁺][OH^–]²

The molarity of the hydrochloric acid used was 0.050 M. 15.00 mL
of filtered Ca(OH) 2 was measured out for the titration.

Calculate the K_sp for calcium hydroxide. Explain your calculations

Trial	Initial Buret Reading	Endpoint Buret Reading	Endpoint Volume	Equivalence Point Volume
1	80ml	9.31 pH	12ml	12.60ml

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