Reactions of metal ions with sodium hydroxide and ammonia

Reactions of metal ions with sodium hydroxide and ammonia Quiz

Spec 17.22–23 · Edexcel International A Level Chemistry: Quiz

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  1. 1. Which ion gives an orange-brown precipitate that does not dissolve in excess alkali?

    • A. Fe²⁺
    • B. Fe³⁺
    • C. Mn²⁺
    • D. Co²⁺

  2. 2. What is seen when excess ammonia is added to Cu²⁺(aq)?

    • A. Pale blue precipitate remains
    • B. Green solution
    • C. Deep blue solution
    • D. Colourless solution

  3. 3. Which hydroxide dissolves in excess sodium hydroxide?

    • A. Fe(OH)₂
    • B. Cu(OH)₂
    • C. Ni(OH)₂
    • D. Zn(OH)₂

  4. 4. What does amphoteric mean?

    • A. Reacts with both acids and bases
    • B. Reacts only with bases
    • C. Reacts only with acids
    • D. Does not react with either

  5. 5. What is the role of NH₃ when a few drops are added to a metal aqua ion?

    • A. Ligand
    • B. Base
    • C. Catalyst
    • D. Oxidising agent

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