Edexcel IAL Chemistry A2 17.22 observations and equations for transition-metal tests
Edexcel IAL Chemistry A2 17.22 observations and equations for transition-metal tests
For each test, pair the observation with the species: write the hydroxide precipitate or ammine complex, then state whether excess reagent dissolves it.
How this is tested
- Record hydroxide precipitate colours for Fe2+, Fe3+, Cu2+, Cr3+, Co2+ or Ni2+.
- Write equations for aqua ions reacting with OH- or NH3 to form precipitates.
- Describe excess NaOH or NH3 behaviour, including dissolving amphoteric or ammine complexes.