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Oxides and Oxoanions

Ferrous ion c...

Question

Ferrous ion can be oxidised by which of the following ions?

L i^{+}

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M n^{+ 2}

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A g^{+}

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A l^{+ 3}

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Solution

The correct option is B $A g^{+}$
Only $A g^{+}$ is present below $F e^{+ 2}$ in the electrochemical series. Therefore, it has low reduction potential or high oxidation potential and is less reactive, hence it can oxidise $F e^{+ 2}$ . All the other metal ions are above $F e^{+ 2}$ and have low oxidation potential (high reactivity). Therefore, they cannot oxidise $F e^{+ 2}$ .

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