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TESTS FOR ANIONS

  ⧫   C arbonate  (CO 3 2-)  : test: add dilute hydrochloric acid. result : effervescence (fizzing), carbon dioxide gas is released ( for testing CO 2  test it with                             Limewater, which will make lime water cloudy.)                                                                           OR test: add dilute nitric acid  result: lime water goes cloudy. ⧫ Chloride  (Cl - ) : test :  Add nitric acid, then aqueous silver nitrate. result: white precipitate of AgCl ( soluble in ammonia ) ⧫  Bromide (Br - ) : test:  Add nitric acid, then aqueous silver nitrate. result : creamy precipitate of AgBr ( slightly soluble in ammonia ). ⧫  Iodide (I - )   :  test :  Add nitric acid, then aqueous silver nitrate. result: yellow precipitate of AgI ( insoluble in excess ammonia ). ⧫  Nitrate (NO 3  - ) : test :  add  aqueous sodium hydroxide then add aluminium. result:   Gas produced turns damp