The reaction scheme shows some reactions of [Cu(H2O)6]²⁺.
[Figure showing reaction scheme: [Cu(H2O)6]²⁺ reacts with NaOH(aq) to form precipitate A (reaction 1), with excess NH3(aq) to form solution B (reaction 2), and with CuCO3(s) (reaction 3) which then reacts with CH3CO2H(aq) to form solution C (reaction 4).]
Platin, Pt(NH3)2Cl2, is a neutral complex of platinum(II).

Q: What topic does this question test?

This question tests Atomic structure in A-Level Chemistry (syllabus code 9701). It is worth 19 marks.

Q: Which exam paper is this question from?

This question appeared in the Cambridge A-Level Chemistry Oct/Nov 2018 examination, Paper 4 Variant 1 (9701_w18_qp_41.pdf).

Question

The reaction scheme shows some reactions of [Cu(H2O)6]²⁺.
[Figure showing reaction scheme: [Cu(H2O)6]²⁺ reacts with NaOH(aq) to form precipitate A (reaction 1), with excess NH3(aq) to form solution B (reaction 2), and with CuCO3(s) (reaction 3) which then reacts with CH3CO2H(aq) to form solution C (reaction 4).]
Platin, Pt(NH3)2Cl2, is a neutral complex of platinum(II).

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