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In the following reaction, how can you tell that the element Fe has undergone oxidation? 5FeCl2...

In the following reaction, how can you tell that the element Fe has undergone oxidation?

5FeCl2 + KMnO4 + 8HCl ---> 5FeCl3 + KCl + MnCl2 + 4H2O

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Answer #1

+2                                        +3

5FeCl2 + KMnO4 + 8HCl 5FeCl3 + KCl + MnCl2 + 4H2O

In the given reaction the oxidation state of Fe in FeCl2 is +2 & that in FeCl3 is +3

On going from reactants to products the oxidation state of Fe increases from +2 to +3.We know that ioncrease in the oxidation state indicates the the reaction is oxidation & the atom that incrases its oxidation state is said to be oxidised.

Therefore Fe has undergone oxidation.

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