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.