Test with Chloride Ions
- Out of the 10 cations, only lead(II) ions will form a precipitate with chloride ions.
- This is because lead(II) chloride is insoluble in water.
- The chemical reaction is a double decomposition reaction.Pb2+ + 2Cl– → PbCl2
- Lead(II) chloride will dissolve in hot water.
HCl or NaCl | |
Na+ | – |
Ca2+ | – |
Mg2+ | – |
Al3+ | .- |
Zn2+ | – |
Pb2+ | White precipitate. Dissolve in hot water |
Fe2+ | – |
Fe3+ | – |
Cu2+ | – |
NH4+ | – |