pH indicators. Acid-base indicators change their colour depending on the pH of a solution. Here different pH indicators have been added to an alkaline solution (back row, 0.01M potassium hydroxide, KOH, pH=12), and an acidic solution (front row, 0.01M hydrochloric acid, HCl, pH=2), left to right: litmus, bromothymol blue, phenolphthalein, bromocresol purple. | |
Licence : | Droits gérés |
Crédit: | Science Photo Library / Science Source / Turtle Rock Scientific |
Taille de l’image : | 5152 px × 3415 px |
Model Release : | Non requis |
Property Release : | Non requis |
Restrictions : | - |