Inhalt:
Beschreibung von Fetten als Ester aus Glycerin und Fettsäuren.
Erklärung der Verseifung: Spaltung von Fetten durch Natronlauge.
Eigenschaften der entstehenden Fettsäuren (hydrophiler Kopf und lipophiler Schwanz).
Veranschaulichung der Funktionsweise von Seifen, z. B. bei der Entfernu...
Fette sind Ester aus einem Molekül Glycerin (Propan-1,2,3-triol) und drei Moleküle einer Fettsäure.
Durch Natronlauge werden die Fette wieder gespalten. Die so entstehenden Fettsäuren haben einen hydrophilen Kopf
und einen lipophilen Schwanz.
Seifenblasen bilden sich, wenn mehrere Fettsäuren (=Seife) sich aneinander lagern und eine Blase bilden.
Eine Seife setzt ihren lipophilen Teil in einen fetthaltigen Schmutzfleck und lässt ihr hydrophiles Köpfchen
herausschauen. Dadurch wird der Schmutzfleck wasserlöslich.
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