Acid-base indicators being compared in an acidic (along top) and alkaline (along bottom) solution. The indicators and the colour changes from acid to alkali are,from left to right: phenolphthalein (colourless-pink),methyl orange (red-yellow),and bromocresol green (yellow-blue). Alkalis and acids are the two sides of the pH scale,indicating the hydrogen ion concentration in a solution relative to that found in water. Alkalis contain less free hydrogen ions than water and acids contain more of these hydrogen ions. Water is considered neutral | |
Lizenzart: | Lizenzpflichtig |
Credit: | Science Photo Library / Andrew Lambert Photography |
Bildgröße: | 4889 px × 3602 px |
Modell-Rechte: | nicht erforderlich |
Eigentums-Rechte: | nicht erforderlich |
Restrictions: | - |