A student is provided with two bottles labelled A and B and a supply of water. One of the bottles contains 1.00 g of solid potassium chloride, KCl. The other bottle contains 1.00 g of solid calcium chloride, CaCl2. When potassium chloride dissolves in water the change is endothermic. When calcium chloride dissolves in water the change is exothermic. Plan experiments, based on dissolving the solids in water, to decide: which compound is in each bottle . which compound produces the greatest heat change per gram of solid. Your plan may use any of the apparatus normally found in a chemistry laboratory but no other chemicals.
