Question

Compound that acts as oxidant as well as
reductant
1) SO2, 2) Cro3; 3) SO3, 4) Al2o3​

Answer 1

The compound that acts as both Oxidant as well as Reductant is Aluminium Oxide ( Al2O3 )

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Answer 2

An oxidising agent is a substance that causes oxidation by accepting electrons.

Here,oxidation state decreases.

An reducing agent is a substance that causes reduction by losing electrons.

Here ,the oxidation increases.

Among all the options all must be either an oxidant or reductant.

In $SO_{2}$​,the oxidation state of sulphur is −4.

It is between lowest (−2) and highest (+6) oxidation states.

Thus, sulphur atom in $SO_{2}$can either accept or lose electrons.

Hence, it can act as oxidant as well as reductant.

In oxidation the substance is reduced.

In reduction the substance is oxidised.

Hence,Therefore the option is $SO_{2}$

1) is a correct answer

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