A 41.00 mL mixture containing 0.0727 M Tl+ and 0.0727 M Hg22+ is titrated with 0.0867 M NaI resulting in the formation of the precipitates TlI and Hg2I2. Calculate pI- at the following points in the titration. The Ksp values for TlI and Hg2I2 are 5.54 × 10-8 and 2.9 × 10-29, respectively.

Chemistry: The Molecular Science
5th Edition
ISBN:9781285199047
Author:John W. Moore, Conrad L. Stanitski
Publisher:John W. Moore, Conrad L. Stanitski
Chapter15: Additional Aqueous Equilibria
Section: Chapter Questions
Problem 15.BCP
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A 41.00 mL mixture containing 0.0727 M Tl+ and 0.0727 M Hg22+ is titrated with 0.0867 M NaI resulting in the formation of the precipitates TlI and Hg2I2. Calculate pI- at the following points in the titration. The Ksp values for TlI and Hg2I2 are 5.54 × 10-8 and 2.9 × 10-29, respectively.

 

a. 43.3 mL

b. 82.2 mL

c. the second equivalence point

d. 110.4 mL

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