A mixture contains 1.0 x 10-3 M Cu²+ and 1.0 x 10-3 M Mn²*. We want to separate these ions by selective precipitation. Ksp(Cu(OH)2) = 1.6 x 10-1º, Ksp(Mn(OH)2) =2 x 10-13. a. What is the minimum concentration of OH required to precipitate Cu(OH)2 in this solution? b. What is the minimum concentration of OH required to precipitate Mn(OH)2 in this solution? If we were to add solid NaOH to the mixture, which cation would precipitate first and at which pH? d. At which pH would the second precipitate form? c.

Chemistry & Chemical Reactivity
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Chapter17: Principles Of Chemical Reactivity: Other Aspects Of Aqueous Equilibria
Section: Chapter Questions
Problem 96GQ: A solution contains 0.10 M iodide ion, I, and 0.10 M carbonate ion, CO32. (a) If solid Pb(NO3)2 is...
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A mixture contains 1.0 x 10-3 M Cu²+ and 1.0 x 10-3 M Mn²+. We want to separate these ions by
selective precipitation. Ksp(Cu(OH)2) = 1.6 x 10-19, K«p(Mn(OH)2) =2 x 10-13.
What is the minimum concentration of OH required to precipitate Cu(OH)2 in this
а.
solution?
b. What is the minimum concentration of OH required to precipitate Mn(OH)2 in this
solution?
If we were to add solid NaOH to the mixture, which cation would precipitate first and at
which pH?
d. At which pH would the second precipitate form?
с.
Transcribed Image Text:A mixture contains 1.0 x 10-3 M Cu²+ and 1.0 x 10-3 M Mn²+. We want to separate these ions by selective precipitation. Ksp(Cu(OH)2) = 1.6 x 10-19, K«p(Mn(OH)2) =2 x 10-13. What is the minimum concentration of OH required to precipitate Cu(OH)2 in this а. solution? b. What is the minimum concentration of OH required to precipitate Mn(OH)2 in this solution? If we were to add solid NaOH to the mixture, which cation would precipitate first and at which pH? d. At which pH would the second precipitate form? с.
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