Solubility and Ionic Strength (Fry-Petit)
- Page ID
- 282901
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Reading: Chapter 12 (sections 1-2)
Homework: Chapter 12: 2, 4, 5, 9-13.b, 14-19
- What was the effect of NaI on the solubility of PbI2? Why?
\[\ce{PbI_{2(s)} ⇆ Pb^2+ + 2I-}\nonumber\]
- What is the effect of adding KNO3 to the above rxn? Why?
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- What is the ionic strength of a 0.00333 M solution of PbI2 and the activity coefficient of Pb2+ and I-?
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- Calculate the solubility of 0.00333 M PbI2 (Ksp 7.9×10-9) solution with 2 different scenarios.
- Assume PbI2 solubility is low enough not to effect ionic strength.
- Assume PbI2 solubility effects ionic strength.
- How does the solubility differ and how can you explain the difference?
- Assume PbI2 solubility is low enough not to effect ionic strength.
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- Calculate the ionic strength and solubility of a saturated solution of 0.0125 M PbI2 with 0.05 M NaCl. Assume PbI2 solubility effects ionic strength.
- Calculate the ionic strength
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- Interpolate to determine the \(γ_{Pb^{2+}}\) and \(γ_{I^-}\)
- Determine the solubility
- Calculate the ionic strength
Contributors and Attributions
- Allyson Fry-Petit, California State University Fullerton (afry@fullerton.edu)
- Sourced from the Analytical Sciences Digital Library