Ammonium chloride formation
Numéro d’image : 13361189
| Ammonium chloride formation. A glass tube is plugged by cotton balls at both ends. Small amounts of concentrated ammonium hydroxide (NH4OH, 28-30%) and concentrated hydrochloric acid (HCl, 32-36%) are used to wet the two balls. Colorless ammonia (NH3) and hydrogen chloride (HCl) gases diffuse from the respective balls. When they meet, they react and produce a ring of fine white powder of ammonium chloride: NH3 + HCl -> NH4Cl. Molecular weight of ammonia is less than that of hydrogen chloride, therefore it diffuses faster and the white ring is formed closer to the ball with the hydrochloric acid. | |
| Licence : | Droits gérés |
| Crédit: | Science Photo Library / Turtle Rock Scientific |
| Taille de l’image : | 5056 px × 3341 px |
| Model Release : | Non requis |
| Property Release : | Non requis |
| Restrictions : | - |
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