A set of empirical rules that allow us to determine an ionic compound"s water-solubility. Compounds were categorized as either soluble or insoluble the truth is there are. Many compounds that were considered insoluble are actually . All ionic compounds dissolve in water . The dissolution of an ionic compound is an . Example caf2 (s) + h2o( ) ca2+(aq) + 2 f (aq) Equilibrium constant for this reaction has a very specific name and equilibrium expression: the . Ksp is a rough measure of a compound"s solubility. The degree a solid compound can dissociate. Ksp can be used directly to compare solubilities of compounds only when the compounds have the same . The number of ions formed upon dissolution. To compare compounds having different dissociation stoichiometries, actual molar solubilities must be calculated. Solubility is the amount of solute that will dissolve in a given amount of solution. The molar solubility (s) can be calculated from the compound"s ksp value and.
