Температура кипения и плавлени

Description

Handbook of boiling and melting points of various substances. Melting point (usually coincides with the crystallization temperature) - the temperature at which a solid crystalline body makes a transition to a liquid state and vice versa. At the melting temperature, the substance can be both in liquid and in solid state. When additional heat is added, the substance will turn into a liquid state, and the temperature will not change until all the substance in the system under consideration is melted.

The boiling point, in contrast to the melting point, is highly dependent on the external pressure at which the measurement is carried out. If pressure is not indicated, this means that the boiling point is measured at a pressure of 760 mm Hg. To determine the boiling point, the liquid is distilled in the usual way, using an appropriate bath (to avoid strong overheating of the liquid) and a proven accurate thermometer.