Question

I am given a question that gas a certain number of moles of CO3 2-, and...

I am given a question that gas a certain number of moles of CO3 2-, and a certain number of moles of Ca 2+, and a certain number of CaCO3(solid) moles. If this solution is not at equilibrium, then what kind of reaction will occur ? Would I need to calculate this depending on the concentrations given ?

Homework Answers

Answer #1

Calcium carbonate is sparingly soluble in water. The solubility equilibrium is as shown.

The expression for the solubility product is

Since, the number of moles of calcium ions and carbonate ions are given, the value of the solubility product can be calculated.

If the solubility product is given and the number of moles of either calcium ions or carbonate ions are given, the number of moles of carbonate ion or calcium ion can be calculated.

For these calculations the volume must be given or molar concentrations should be given.

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