Red cabbage as a pH indicator. Computer artwork showing the method used to prepare red cabbage for use as a pH indicator. The pH scale is a measure of the acidity or alkalinity (basicity) of an aqueous solution. Solutions with a pH less than 7 are said to be acidic and solutions with a pH greater than 7 are basic,or alkaline. Pure water has a pH very close to 7 (neutral). An indicator made from the juice of red cabbage contains anthocyanin pigments that turn red in acid and green/yellow in basic solutions | |
Lizenzart: | Lizenzpflichtig |
Credit: | Science Photo Library / Jensen, Mikkel Juul |
Bildgröße: | 5975 px × 2940 px |
Modell-Rechte: | nicht erforderlich |
Eigentums-Rechte: | nicht erforderlich |
Restrictions: | - |