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13 Dec 2019

One crystalline form of calcium carbonate is the mineral sold as "calcite" in mineral and gem shops. The solubility of calcite in water is 0.67 mg/100mL. Calculate its Ksp.

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Lelia Lubowitz
Lelia LubowitzLv2
17 Dec 2019

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Related questions

Use the van't Hoff equation to calculate the solubility of calcite in water at 10, 20, and 30 degrees C and express each in terms of the concentration of Ca2+ in mg/L. How do your van't Hoff calculations compare to your qualitive estimate of what happens to the solubility of calcite with increases in temperature?

Calculate the solubility of calcite at 15 C in pure water inequilibrium with CO2 at 3*10^-3 atm pressure. Set up equationsbased on the dissociation of carbonic acid and solve for theactivity of H^+. Specify the concentrations of all ions and express(Ca^2+) in mg/L.

You do needto consider hydrolysis, as well as ionic strength of the solutionsince you start with pure water, dissolving some calcite will causethe solution to have an ionic strength.


Temp pKA1 pKA2 pKsp pKCO2
15 C 6.42 10.43 8.22 1.35


CaCO3 Ksp =8.35


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