Why do electrons transfer from zinc rods to copper rods in galvanic cells ?

Why do electrons transfer from zinc rods to copper rods in galvanic cells ?
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Answer :

Zinc rods and zinc sulphate solutions are used at the anode of galvanic cells and copper rods and copper sulphate solutions are used at the cathode. Zinc acts as an antidote and copper as an oxidizer, as zinc is more active than zinc and copper. As we know , toxins donate electrons and oxidants receive electrons. Thus , electrons are transferred from the zinc bar to the copper bar in the mentioned cell.
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