This drill uses the general solubility rules from Chemistry 221. When you press "New Problem", a mixture of two soluble salts will be presented Determine whether a precipitate is likely and click the appropriate circle Based upon your response, a number of possible outcomes can result: If the correct answer was no precipitate, then the problem is concluded. If you correctly indicated that there would be a precipitate, you will be asked to identify it. Only a single attempt at each question is allowed.