Excess solid Na₂CO, is added to a solution containing 0.800 M (each) Mg²+ and Zn²+ ions. Ksp for MgCO₂ is 3.50 x 108 and Ksp for ZnCO, is 1.00 x 10.1⁰. ZnCO₂, with the smaller Ksp, will be the least soluble and will begin precipitating first. What will be the [Zn²+] concentration when MgCO just begins to precipitate? (Assume no volume change upon addition of the solid Na₂CO₂).

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Author:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste
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Chapter1: Chemical Foundations
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Excess solid Na₂CO, is added to a solution containing 0.800 M (each)
Mg²+ and Zn²+ ions. Ksp for MgCO₂ is 3.50 x 108 and Ksp for ZnCO, is
1.00 × 10¹1⁰. ZnCO., with the smaller Ksp, will be the least soluble and
will begin precipitating first. What will be the [Zn²+] concentration when
MgCO, just begins to precipitate? (Assume no volume change upon
addition of the solid Na₂CO₂).
1
4
7
+/-
2
5
8
| M
3
6
9
0
Transcribed Image Text:Excess solid Na₂CO, is added to a solution containing 0.800 M (each) Mg²+ and Zn²+ ions. Ksp for MgCO₂ is 3.50 x 108 and Ksp for ZnCO, is 1.00 × 10¹1⁰. ZnCO., with the smaller Ksp, will be the least soluble and will begin precipitating first. What will be the [Zn²+] concentration when MgCO, just begins to precipitate? (Assume no volume change upon addition of the solid Na₂CO₂). 1 4 7 +/- 2 5 8 | M 3 6 9 0
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