2 x 1 hour lessons

This short module explores the behaviour of transition metal ions in aqueous solution. You’ll study ligand exchange, complex ion formation, and the use of ammonia and hydroxide ions in test-tube reactions. This is key practical knowledge for qualitative inorganic analysis.

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By the end of this module you will be able to: • describe and write equations for the reactions of aqueous transition metal ions with NaOH and NH₃ • explain ligand substitution and precipitation reactions involving metal–aqua ions • identify transition metal ions based on colour changes and precipitate formation • understand the role of complex ion formation in dissolving otherwise insoluble precipitates

Edexcel Specification Points: Topic 15B – Reactions of Transition Metal Elements