Identifying Anions - Chloride

  1. You should have learned that, all the salts of chloride are soluble in water except lead(II) chloride, silver(I) chloride and mercury chloride.
  2. The insolubility if silver(I) chloride is used in the test of presence of chloride.
  3. 2 cm³ of dilute nitric acid is added to 2 cm3 solution of chloride ions. This is the check if carbonate ions are presence because carbonate ions may give the same result.
  4. If there is no effervescence, 2 cm³ of silver nitrate solution is then added into the mixture.
  5. A white precipitate will form if chloride is presence in the salt.
  6. The precipitate is silver chloride
    Ag+ + Cl → AgCl

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