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3. Cobalt (II) Sulfide (CoS) is more soluble in aqueous solutions when you add an inert salt like potassium nitrate, even though neither potassium nor nitrate show up in the BCE for the dissolution reaction. The solubility product constant for cobalt (II) sulfide is Ksp = 5 x 10-22 making it a remarkably insoluble substance. Your job is to figure out the molar solubility in pure water, then the molar solubility in a 0.25 M KNO3 aqueous solution and finally to express the change as a percent difference. To make it easier (and faster) please use the Debye-Hückel limiting law: log Yx = -0.510 Zx² (u)1/2 to obtain the required activity coefficients and make a simple assumption about the ionic strength of water - rather than solving for it in an iterative process.

3. Cobalt (II) Sulfide (CoS) is more soluble in aqueous solutions when you add an inert salt like potassium nitrate, even though neither potassium nor nitrate show up in the BCE for the dissolution reaction. The solubility product constant for cobalt (II) sulfide is Ksp = 5 x 10-22 making it a remarkably insoluble substance. Your job is to figure out the molar solubility in pure water, then the molar solubility in a 0.25 M KNO3 aqueous solution and finally to express the change as a percent difference. To make it easier (and faster) please use the Debye-Hückel limiting law: log Yx = -0.510 Zx² (u)1/2 to obtain the required activity coefficients and make a simple assumption about the ionic strength of water - rather than solving for it in an iterative process.

Chemistry
Chemistry
10th Edition
ISBN:9781305957404
Author:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste
Publisher:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste
Chapter1: Chemical Foundations
Section: Chapter Questions
Problem 1RQ: Define and explain the differences between the following terms. a. law and theory b. theory and...
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3. Cobalt (II) Sulfide (CoS) is more soluble in aqueous solutions when you add an inert salt like potassium nitrate, even though neither potassium nor nitrate show up in the BCE for the dissolution reaction. The solubility product constant for cobalt (II) sulfide is Ksp = 5 x 10-22 making it a remarkably insoluble substance. Your job is to figure out the molar solubility in pure water, then the molar solubility in a 0.25 M KNO3 aqueous solution and finally to express the change as a percent difference. To make it easier (and faster) please use the Debye-Hückel limiting law: log Yx = -0.510 Zx2² (μ)1/2 to obtain the required activity coefficients and make a simple assumption about the ionic strength of water - rather than solving for it in an iterative process.
Transcribed Image Text:3. Cobalt (II) Sulfide (CoS) is more soluble in aqueous solutions when you add an inert salt like potassium nitrate, even though neither potassium nor nitrate show up in the BCE for the dissolution reaction. The solubility product constant for cobalt (II) sulfide is Ksp = 5 x 10-22 making it a remarkably insoluble substance. Your job is to figure out the molar solubility in pure water, then the molar solubility in a 0.25 M KNO3 aqueous solution and finally to express the change as a percent difference. To make it easier (and faster) please use the Debye-Hückel limiting law: log Yx = -0.510 Zx2² (μ)1/2 to obtain the required activity coefficients and make a simple assumption about the ionic strength of water - rather than solving for it in an iterative process.
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