Preparation of ammonia. At left a mixture of ammonium chloride and slaked lime is being heated,this reacts to create ammonia gas. The gas,which is lighter than air,travels down the central glass tube and is passed through a column of quicklime to dry it. When the ammonia gas has filtered through the quicklime it can be detected with the moist litmus paper (red),which will turn blue | |
Licence : | Droits gérés |
Crédit: | Science Photo Library / Andrew Lambert Photography |
Taille de l’image : | 3688 px × 4843 px |
Model Release : | Non requis |
Property Release : | Non requis |
Restrictions : | - |