MODEL RELEASED. pH test for alkali metal solution. Universal indicator solution (from bottle at right) being added to an aqueous solution of hydroxide formed from an alkali metal. As their name indicates,alkali metals react to form alkaline solutions (of hydroxides) in water. The universal indicator solution,an acid-base indicator,has turned purple on contact with the hydroxide solution,confirming that the solution is alkaline | |
Licence : | Droits gérés |
Crédit: | Science Photo Library / Chillmaid, Martyn F. |
Taille de l’image : | 3465 px × 4472 px |
Model Release : | Non requis |
Property Release : | Non requis |
Restrictions : | - |