CHAPTER VIII. Solutions of Solids in Liquids, Only One of the Components Being

SOLUTIONS OF SOLIDS IN LIQUIDS, ONLY ONE OF THE COMPONENTS BEING VOLATILE 133

B. HYDRATED SALT AND WATER, (1) The compounds formed do not have a definite melting point. Concentration-temperature diagram, 133. Sodium sulphate and water, 134. Suspended transformation, 137. Dehydration by means of anhydrous sodium sulphate, 138. Pressure-temperature diagram, 138. (2) The compounds formed have a definite melting point. Solubility curve of calcium chloride hexahydrate, 145. Pressure-temperature diagram, 149. The indifferent point, 150. The hydrates of ferric chloride, 151. Suspended transformation, 155. Evaporation of solutions at constant temperature, 155. Inevaporable solutions, 157. Illustration, 158.