Ammonia is a compound with formula NH3.
- Ammonium salts react with alkalines to form ammonia, water and a salt.
- Ammonia plus hydrogen chloride gas forms a white solid.
- Ammonia turns red litmus paper blue
- Ammonia does not burn in air
- Ammonia is very soluble in water
- Gas at RTP
- Pungent, characteristic smell
Identifying metal ions with ammoniaEdit
The first arrow is what happens with a few drops NH3(aq). The second arrow is what happens with excess NH3(aq).
- Cu2+ --> gelatinous blue precipitate --> deep blue solution
- Fe2+ --> dirty green ppt. --> ppt. remains
- Fe3+ --> rusty brown ppt. --> ppt. remains
- Al3+ --> white ppt. --> ppt. remains
- Zn2+ --> white ppt. --> ppt. dissolves (colourless solution)
- Ca2+ --> faint white ppt. --> ppt. remains
Manufacture of Ammonia (1)Edit
Ammonia is made in the lab by adding an ammonium salt to an alkali.
Manufacture of Ammonia (2)Edit
Ammonia is made industrially by the Haber process.