Chemistry Identification Tests

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Chromium(III) ion (aq)
Blue/Grey/Violet Solution
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Chromium(III) + NaOH
Green Precipitate
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Chromium(III) + Excess NaOH
Precipitate Dissolves to Make a Green Solution
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Chromium(III) + NH3
Dark Green Precipitate
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Chromium(III) + Excess NH3
Precipitate Insoluble
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Manganese(II) ion (aq)
Pale Pink Solution
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Manganese(II) + NaOH
Buff/Beige Precipitate Darkens in Air
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Manganese(II) + Excess NaOH
Precipitate Insoluble
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Manganese(II) + NH3
Buff/Beige Precipitate Darkens in Air
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Manganese(II) + Excess NH3
Precipitate Insoluble
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Iron(II) ion (aq)
Pale Green Solution
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Iron(II) + NaOH
Deep Green Gelatinous Precipitate. Turns Brown With Time.
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Iron(II) + Excess NaOH
Precipitate Insoluble
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Iron(II) + NH3
Deep Green Gelatinous Precipitate. Turns Brown With Time.
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Iron(II) + Excess NH3
Precipitate Insoluble
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Nickel(II) ion (aq)
Green Solution
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Nickel(II) + NaOH
Pale Green Gelatinous Precipitate
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Nickel(II) + Excess NaOH
Insoluble Precipitate
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Nickel(II) + NH3
Pale Green Precipitate
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Nickel(II) + Excess NH3
Precipitate Dissolves to Blue Solution
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Copper(II) ion (aq)
Blue Solution
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Copper(II) + NaOH
Pale Blue Precipitate
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Copper(II) + Excess NaOH
Insoluble Precipitate
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Copper(II) + NH3
Light Blue Precipitate
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Copper(II) + Excess NH3
Precipitate Dissolves to Royal/Deep Blue Solution
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Iron(III) ion (aq)
Yellow/Straw Coloured Solution
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Iron(III) + NaOH
Red/Brown Precipitate
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Iron(III) + Excess NaOH
Insoluble Precipitate
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Iron(III) + NH3
Red/Brown Precipitate
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Iron(III) + Excess NH3
Insoluble Precipitate
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Zinc(II) ion (aq)
Colourless Solution
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Zinc(II) + NaOH
White Gelatinous Precipitate
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Zinc(II) + Excess NaOH
Precipitate Dissolves to Colourless Solution
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Zinc(II) + NH3
White Gelatinous Precipitate
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Zinc(II) + Excess NH3
Precipitate Dissolves to Colourless Solution
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Add HCl
Test For Carbonate (CO3 2-). Effervescence, Limewater Turns Cloudy (White Precipitate)
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Heat
Test for Hydrogencarbonate (HCO3 -). Gas Turns Limewater CLoudy (White Precipitate)
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Add Dilute Nitric acid then Barium Chloride.
Test for Sulphate (SO4 2-). Dense White Barium Sulphate Precipitate.
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Add Dilute HCl
Test for Sulphite (SO4 2-) Effervescence as Sulphur Dioxide Produced. Gas Decolourises Acidified Manganate.
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Add Dilute Nitric acid then Barium Chloride, then add Universal Indicator.
Test for Hydrogensulphate (HSO4 -). Dense White Precipitate Then UI Turns Red.
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Add Dilute Nitric Acid Then Silver Nitrate Solution
Test for Halides (Cl, Br, I). Cl - White Precipitate, Soluble in Dilute Ammonia. Br - Cream Precipitate, Soluble in Conc. Ammonia. I - Yellow Precipitate, Insoluble in Ammonia.
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Add NaOH, Devarda's Alloy Then Heat.
Test for Nitrate (NO3 -). Ammonia Smell. Turns Damp Red Litmus Paper Blue.
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Add Iron(II) Sulphate Solution, Conc. Sulphuric Acid.
Test for Nitrate (NO3 - ). Brown Ring Where Layers Meet.
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Other cards in this set

Card 2

Front

Green Precipitate

Back

Chromium(III) + NaOH

Card 3

Front

Precipitate Dissolves to Make a Green Solution

Back

Preview of the back of card 3

Card 4

Front

Dark Green Precipitate

Back

Preview of the back of card 4

Card 5

Front

Precipitate Insoluble

Back

Preview of the back of card 5
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