Metal Hydroxides (AQA GCSE Chemistry): Flashcards

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Metal Hydroxides
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Reagent used to identify metal ions

Sodium hydroxide (NaOH)

Ion from NaOH that reacts with metal ions

Hydroxide ions (OH−OH^-)

Solubility of metal hydroxides

Usually insoluble

Colour of Ca2+Ca^{2+} precipitate with NaOH

White

Colour of Mg2+Mg^{2+} precipitate with NaOH

White

Colour of Al3+Al^{3+} precipitate with NaOH

White

Colour of Cu2+Cu^{2+} precipitate with NaOH

Blue

Colour of Fe2+Fe^{2+} precipitate with NaOH

Green

Colour of Fe3+Fe^{3+} precipitate with NaOH

Brown

Behaviour of Al hydroxide in excess NaOH

Dissolves to form colourless solution

Metal hydroxide dissolving in excess NaOH

Aluminium hydroxide

Product when Ca2+Ca^{2+} reacts with NaOH

Calcium hydroxide Ca(OH)2Ca(OH)_2

Name of precipitate formed by Cu2+Cu^{2+} + NaOH

Copper hydroxide

How metal ions are identified in solution

By colour of precipitate formed with NaOH

Explore AQA GCSE Chemistry Revision Notes by Topics

Purity, Formulations & Chromatography

Identification of Common Gases

Methods of Identifying Ions

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Purity, Formulations & Chromatography

Identification of Common Gases

Methods of Identifying Ions

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Purity, Formulations & Chromatography

Identification of Common Gases

Methods of Identifying Ions

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Purity, Formulations & Chromatography

Identification of Common Gases

Methods of Identifying Ions

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