BRAINCAKETest for Transition Metal Ions
If sodium hydroxide or ammonia solution is added to complex ion with water ligands insoluble hydroxides are precipitated. The precipitates of Mn(OH)2 and Fe(OH)2 darken as they oxidise in air. The metal ions can be identified by the colour of their precipitates. The table shows the colours of the precipitates and the result of adding excess NaOH.
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Key terms in this lesson
- transition metal
- A metal that can form one or more stable ions with an incomplete d sub-shell.
More in Redox Reactions
- Heterogenous Catalysts
- Homogenous Catalysts
- Autocatalysis
- Hydration of Metal Ions
- Reaction with Ammonia Solution
- Reaction with Sodium Hydroxide
- Reaction with Sodium Carbonate
- Questions
All 21 lessons in Redox Reactions · All OCR A-level Chemistry topics