Ksp that is solubility product can be defined as ratio of product to the reactant . It is higher than 1 implies there are more products than that of reactants favoring forward direction reaction and as solubility product defines solubility so its higher value indicate that solid phase is relatively soluble, So High values of Ksp greater than 1.0 infer that solid phase is relatively soluble and also the chemical reaction proceeds readily to the right.