Phenolphthalein indicator. Phenolphthalein indicator changes its colour depending on the pH of the solution, it turns colourless in acidic solutions and pink/fuchsia in basic solutions. Here phenolphthalein solution was added to 5% vinegar (acidic, at left) and a baking soda solution (basic, at right). | |
Licence : | Droits gérés |
Crédit: | Science Photo Library / Giphotostock |
Taille de l’image : | 5126 px × 3390 px |
Model Release : | Non requis |
Restrictions : |
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