Eine Thermowaage für den Unterricht |
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Authors: | E. Wiederholt V. Fahrney R. Skrozki |
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Affiliation: | (1) Didaktik der Chemie, Bergische Universität Gh Wuppertal, Gauss-Str. 20, D-5600 Wuppertal 1, West Germany |
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Abstract: | Zusammenfassung Eine Thermowaage, mit der gleichzeitig die Masse und die Temperatur in einer Probe gemessen werden können, wurde für Lehrzwecke entwickelt. Am Beispiel der Verdunstung von Aceton, der Entwässerung von Kupfersulfat-pentahydrat, der Zersetzung von Magnesiumoxalat-dihydrat und der Pyrolyse von Weichholz werden ihre TG-Kurven diskutiert.
A thermobalance for teaching purposes was constructed which is able to measure simultaneously mass and temperature in a sample. The effectiveness of the device is discussed by the TGA curves of the evaporation of acetone, the dehydration of copper sulphate pentahydrate, the decomposition of magnesium oxalate dihydrate, and the pyrolysis of wood.
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