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Edexcel A-Level Chemistry A2 17.22 Record Observations and Write Suitable Equations for the Reactions of Cr3 Aq Mn2 Aq Fe2 Aq Fe3 Aq Co2 Aq Questions

For each test, pair the observation with the species: write the hydroxide precipitate or ammine complex, then state whether excess reagent dissolves it.

Syllabus
First assessment 2019
Course
Chemistry YCH11
Level
A2

Exam points

  • 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.

Edexcel A-Level Chemistry A2 17.22 Record Observations and Write Suitable Equations for the Reactions of Cr3 Aq Mn2 Aq Fe2 Aq Fe3 Aq Co2 Aq Questions question 1

[Maximum number: 1]

This question is about copper and some of its compounds.

Two tests were carried out on separate samples of an aqueous solution of copper(II) sulfate.

Test 1

A few drops of aqueous sodium hydroxide were added to a sample of the copper(II) sulfate solution.

State what you would see.

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