O.4 Flashcards
Solubility products
Is it possible to have insoluble substances?
No, there will always be some quantity of dissolved ions in solution, however small.
Using the equilibrium of the dissolving process of calcium carbonate, what the equation of Kc?
[Ca2+(aq)][CO3 2-(aq)]/[CaCO3(s)]
When the dynamic equilibrium of the dissolving process has been reached, what is a word that is used to describe the solution?
Saturated.
What does it mean when the solution is saturated?
It is when adding more solid will no cause a shift in equilibrium because no more solid can physically dissolve.
Because in a saturated solution, the concentration of solid is almost constant, what can Kc be rewritten as?
Ksp = [Ca2+(aq)][CO3 2-(aq)]
What is Ksp?
Equilibrium of solubility product.
What does the equilibrium of solubility product represent?
The conditions for the equilibrium between a sparingly soluble solid and its saturated solution at a given temperature.
How can the value of Ksp be used?
To predict whether a precipitate will form from a solution.
Referring to Ksp, when will solid precipitate form from a solution?
When the dissolved ion concentrations multiple to give a value bigger than the value of Ksp.
Referring to Ksp, when will ions stay in the solution?
When the dissolved ion concentrations multiple to give a value smaller than or equal to the value of Ksp.
