Shop a large selection of Calcium products and learn more about Calcium chloride dihydrate, extra pure, flakes for drying purposes, 77-80% CaCl2, ACROS Organics. 2.5kg; Plastic The Solubility Rules 1. The nitrates, chlorates, and acetates of all metals are soluble in water. Silver acetate is sparingly soluble. 2. All sodium, potassium, and ammonium salts are soluble in water. 3. The chlorides, bromides, and iodides of all metals except lead, silver, and mercury(I) are soluble in water. HgI2 is insoluble in water. Aug 20, 2020 · Its solubility product is 1.08 × 10 −10 at 25°C, so it is ideally suited for this purpose because of its low solubility when a “barium milkshake” is consumed by a patient. The pathway of the sparingly soluble salt can be easily monitored by x-rays. 4. Sulfates are soluble except with calcium, strontium, barium, silver, mercury and lead. 5. Carbonates, Hydroxides, Oxides and Phosphates are insoluble except as in rule one. Start with Rule 1 and go to the first rule that applies. For example, silver nitrate is soluble, but silver phosphate is not. This quiz will cover the solubility rules.