Concept #1: When the size parameter of the ion is unknown we can instead use the Davies Equation.
Example #1: Calculate the activity coefficient of Ca2+ in 0.025 M Ca3(PO4)2.
Concept #2: Cations are able to create acidic or neutral solution and increasing the basicity will increase their solubility.
Concept #3: Anions are able to create basic or neutral solution and increasing the acidity will increase their solubility.
BaCO3 is the slightly soluble ionic salt that results from the reaction between Ba(OH)2 and H2CO3. Identify the effect of increasing acidity on the solubility of the given compound.
Which salts will be more soluble in an acidic solution than in pure water?