Chemical Analysis

Cards (17)

  • Test for chloride?
    Nitric Acid + silver nitrate
  • Observations for positive test for chloride
    White precipitate
  • Test for bromide
    Nitric acid + silver nitrate
  • Observations for positive test of bromide
    Cream ppt
  • Iodide test, observations for postive test
    Nitric acid + silver nitrate
    Yellow ppt
  • Nitrate test, observations for postive test
    Add sodium hydroxide
    Add aluminum foil
    Warm
    Test gas produced with damp pH indicator paper
    Ammonia gas produced/ indicator goes blue
  • Carbonate test, observations for + test
    Any dilute acid then bubble gas thru limewater
    Limewater goes cloudy
  • Hydrogen carbonate, observations for + test
    After positive carbonate test
    Add magnesium chloride
    Hydrogen carbonate: colorless solution
    Carbonate: white ppt
  • Sulphate test, observations for + test
    HCI/Nitric acid + barium chloride/nitrate
    White ppt
  • Copper test, observations for + test
    Add NaOH then excess
    Add ammonia then excess
    NaOH - light blue ppt
    NaOH excess - stays insoluble
    NH3 - light blue
    NH3 excess -dark blue solution
  • Iron (II) test, observations for + test
    Add NaOH then excess
    Add Ammonia then excess
    NaOH - green ppt
    NaOH excess - insoluble
    NH3 - Green ppt
    NH3 excess - green ppt
  • Iron (III) test, + test
    Add NaOH then excess Add Ammonia then excess
    NaOH - brown ppt
    NaOH excess - insoluble
    NH3 - brown ppt
    NH3 excess - insoluble
  • Zinc test
    Add NaOH then excess Add Ammonia then excess
    NaOH - white ppt
    NaOH excess - colorless
    NH3 - white ppt
    NH3 excess - colorless
  • Calcium test
    Add NaOH then excess Add Ammonia then excess
    NaOH - white ppt
    NaOH excess - insoluble
    NH3 - colorless ppt
    NH3 excess - colorless ppt
  • Ammonium test, + test
    NaOH + heat
    Heat gently
    Test gas produced with damp pH indicator
    Ammonia gas produced (blue)
  • Magnesium test, + test
    NaOH
    NH3
    NaOH - white ppt
    NaOH excess - stays insoluble
    NH3 - white
    NH3 excess - insoluble
  • aluminum test, + test
    NaOH
    NH3
    NaOH - white ppt
    NaOH excess - colorless
    NH3 - white
    NH3 excess - insoluble