Question

State whether the following conversions are oxidation or reduction reactions

1.PbO2+SO2—> PbSO4
2. Cu2+ + 2e- —> Cu
3. K—> K+ - e-
4. 2Cl- - 2e- —> Cl2

Answer 1

1)pbo is redused and so2 is oxidised

2)cu is oxidised

3)k is reduced

4)cl is reduced

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Answer 2

Answer:

only first is oxidation reaction