Universal indicator in a weak acid. Universal indicator is a mixture of chemicals that changes colour according to the pH (acidity) of the solution in which it is placed. It is red in strong acids,orange in weak acids,yellow/green in neutral water,and blue then purple in increasingly strong alkalis | |
Lizenzart: | Lizenzpflichtig |
Credit: | Science Photo Library / Chillmaid, Martyn F. |
Bildgröße: | 2848 px × 4256 px |
Modell-Rechte: | nicht erforderlich |
Eigentums-Rechte: | nicht erforderlich |
Restrictions: | - |