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Question

When zinc and copper (II) sulphate are heated together, the following redox reaction occurs
Zn(s)+CuSO4(aq)ZnSO4(aq)+Cu(s)
i) What does the word redox stand for?
ii) Show how electrons are transferred in the reaction.
iii) Write the ionic equation for the redox reaction.

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Solution

(i) Redox stands for reduction and oxidation taking place simultaneously in a reaction.
(ii) ZnZn2++2e
Cu2++2eCu
(iii) Ionic equation for redox reaction:
Zn+Cu2+Zn2++Cu

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