CHAPTER XV

PRESENCE OF SOLID PHASES 253

A. The ternary eutectic point, 253. Formation of compounds, 255. B. Equilibria at higher temperatures. Formation of double salts, 258. Transition point, 258. Vapour pressure. {xv} Quintuple point, 261. Solubility curves at the transition point, 264. Decomposition of the double salt by water, 267. Transition interval, 270. Summary, 271.