Oxidation and reduction
3 marks · EasyThe following equation shows a redox reaction: Describe, in terms of electrons, what happens to:
(a)[1 mark]
the zinc atoms
(b)[1 mark]
the copper ions
(c)[1 mark]
State which is oxidised and which is reduced.
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(a) Zinc atoms lose electrons
(b) Copper ions gain electrons
(c) Zinc is oxidised, copper is reduced
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Marking points
A1 (a) · 1 mark · States zinc atoms lose electrons.
A2 (b) · 1 mark · States copper ions gain electrons.
A3 (c) · 1 mark · Correctly identifies which is oxidised and which is reduced.
Worked solution
a) Zinc atoms lose electrons. b) Copper ions gain electrons. c) Zinc is oxidised and copper is reduced.