Chemical Tests for Metal Ions

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Definition of Precipitate
A precipitate is the product of a reaction that is insoluble in the solvent of the reactants.
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Calcium - Ca2+ (aq)
Test- Add sodium hydroxide in drops. Result- White precipitate forms, which remains even when excess sodium hydroxide is added
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Copper (II) - Cu2+ (aq)
Test- Add sodium hydroxide in drops. Result- Light blue precipitate formed.
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Iron (II)- Fe2+ (aq)
Test- Add sodium hydroxide in drops. Result- Green precipitate forms. On standing changes to reddish brown colour.
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Iron (III)- Fe3+ (aq)
Test- Add sodium hydroxide in drops. Result- Reddish Brown precipitate formed
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Magnesium- Mg2+ (aq)
Add sodium hydroxide in drops. Result- White precipitate forms, which remains even when excess sodium hydroxide is added.
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Other cards in this set

Card 2

Front

Test- Add sodium hydroxide in drops. Result- White precipitate forms, which remains even when excess sodium hydroxide is added

Back

Calcium - Ca2+ (aq)

Card 3

Front

Test- Add sodium hydroxide in drops. Result- Light blue precipitate formed.

Back

Preview of the back of card 3

Card 4

Front

Test- Add sodium hydroxide in drops. Result- Green precipitate forms. On standing changes to reddish brown colour.

Back

Preview of the back of card 4

Card 5

Front

Test- Add sodium hydroxide in drops. Result- Reddish Brown precipitate formed

Back

Preview of the back of card 5
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