Evaporation
Evaporation (also evaporation ) refers to the heating of a chemical solution with the aim of completely separating the solvent , e.g. water, from the dissolved substance (as opposed to concentration ) (it is said that the solvent is drawn off ). If it is not volatile, this remains behind as a solid residue. In contrast to distillation , the solvent is lost, for example as water vapor, when evaporating in air. An example of this is the extraction of sea salt. If you do not heat it and wait for the solvent to evaporate in an open vessel due to the ambient heat , this is called evaporation .
A related process is the concentration already mentioned above, in which only part of the solvent is drawn off - this can also be recovered by carrying out the concentration as a distillation.
In contrast to these processes, smoking means working (e.g. digestion or cleaning) with highly concentrated acids, especially sulfuric and nitric acid .
In drug jargon, “vaporizing” means consuming cannabis .
As a kitchen term, it describes the moderate heating of cooked potatoes (cubes) to produce a potato mixture, the basis of various potato preparations such as croquettes . The evaporation releases the water contained in the potato.
literature
- Carl Hartmann (Hrsg.): Concise dictionary of the mountain, hut and Saltwork science of mineralogy and geognosy. First volume, second completely revised edition, Bernhard Friedrich Voigt bookstore, Weimar 1859.
- Klaus Sattler: Thermal separation processes. Basics, design, apparatus, 3rd revised and expanded edition, Wiley Ych Verlag GmbH, Weinheim 2001, ISBN 3-527-30243-3 .
