Ammonia test. There is no visible vapour from the ammonia in the test tube; although it has a distinctive pungent smell. To confirm the vapour is present it should be brought into the proximity of hydrochloric acid vapour. When the vapours combine a visible smoke of ammonium hydroxide will be formed | |
Licence : | Droits gérés |
Crédit: | Science Photo Library / Chillmaid, Martyn F. |
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