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Chemistry Forums for Students => Physical Chemistry Forum => Topic started by: dpsguy on September 05, 2005, 02:38:50 AM

Title: solubility
Post by: dpsguy on September 05, 2005, 02:38:50 AM
 How does the solubility of salts depend on pH? For example , would the solubility of CaF2 increase or decrease if the pH of its solution were decreased? Is their a mathematical expression for this?
Title: Re:solubility
Post by: Borek on September 05, 2005, 03:36:34 AM
Quote from: dpsguy on September 05, 2005, 02:38:50 AM
How does the solubility of salts depend on pH? For example , would the solubility of CaF2 increase or decrease if the pH of its solution were decreased? Is their a mathematical expression for this?

Hydrofluoric acid - strong, or weak?

What will happen to the F- anions in acidic solution?

Ca2+ - what will it do in the presence of OH-?

Le Chateliers Principle?

It can be all calculated using individual equilibrium equations. There is no one, universal method of calculations, unless you want to try numerical methods.