Which is the best strategy to predict whether a precipitation reaction will occur upon the mixing of two solutions? view available hint(s) which is the best strategy to predict whether a precipitation reaction will occur upon the mixing of two solutions? for each possible product, compare the reaction quotient, q, with the corresponding ksp for the dissociation reaction. if q is less than ksp, a precipitate will form. for each possible product, compare the reaction quotient, q, to ksp for the dissociation. if q is greater than ksp, a precipitate will form. compare the concentration of each ion. if the concentrations of any of the ions forming the possible precipitate are above the molar solubility of the compound, a precipitate will form. check the solubility rules and predict whether a precipitate will form.