Reactions of transition metal ions with bases and ligands

Reactions of transition metal ions with bases and ligands Quiz

Spec 15B · Edexcel A-Level Chemistry: Quiz

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  1. 1. Which hydroxide precipitate dissolves in excess aqueous NaOH?

    • A. Cu(OH)₂(H₂O)₄
    • B. Fe(OH)₃(H₂O)₃
    • C. Cr(OH)₃(H₂O)₃
    • D. Co(OH)₂

  2. 2. What is the colour of the precipitate when excess NaOH is added to iron(III) ions?

    • A. Orange-brown
    • B. Green
    • C. Pale blue
    • D. Blue

  3. 3. What happens to the coordination number in [Cu(H₂O)₆]²⁺ → [CuCl₄]²⁻?

    • A. It stays at 6
    • B. It rises from 4 to 6
    • C. It falls from 6 to 2
    • D. It falls from 6 to 4

  4. 4. In [Cu(H₂O)₆]²⁺ + 4NH₃ → [Cu(NH₃)₄(H₂O)₂]²⁺ + 4H₂O, what type of reaction occurs?

    • A. Redox
    • B. Ligand exchange
    • C. Amphoteric behaviour
    • D. Precipitation

  5. 5. Why is ΔS system positive when [Ni(H₂O)₆]²⁺ reacts with 3 en?

    • A. Four particles become seven
    • B. Seven particles become four
    • C. The oxidation number of nickel changes
    • D. Bonds are broken only

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