Teste dein Wissen mit Aufgaben aus der ChemieOlympiade!: Der Titer der Kokosnuss

Test your knowledge with challenges fom the ChemistryOlympiad!: The titer of the coconut

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Publication data


BySonja Hanebaum, Maximilian Fellert, Klaus Ruppersberg
Original languageGerman
Published inChemie konkret - Forum für Unterricht und Didaktik, 27(1)
Pages44-45
Editor (Publisher)Wiley
ISSN0944-5846, 1521-3730
DOI/Linkhttps://doi.org/10.1002/ckon.202080171 (Open Access)
Publication statusPublished – 02.2020

Coconuts are the fruits of the coconut palm Cocos nucifera, which is one of the tropical palm plants. Coconut palms grow close to the equator around the globe and require a lot of sun, warmth and regular rainfall to produce fruit. Young coconuts contain up to one liter of coconut water. This volume decreases over time in the ripening process. Coconut water has life-supporting properties. It is a natural isotonic liquid that has a very similar electrolyte content to human blood. Therefore, it was used as a plasma transfusion during World War II to normalize the chloride and glucose levels of the wounded soldiers. In oral rehydration solutions for the treatment of diarrheal diseases - coconut water is also used for this - the right ratio of glucose and electrolytes is particularly important. The corresponding concentrations can be determined by titration for the analysis. A standard solution with known exact concentration is used for this purpose. When producing such solutions, the actual value often deviates slightly from the target value. Therefore, the titer t is determined as the quotient of the target and actual concentration of the standard solution with the aid of primary titer substances.