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  • Justify that the following reactions are redox reactions Fe2O3(s) + 3CO(g) → 2Fe(s) + 3CO2(g)

8.3 Justify that the following reactions are redox reactions:

(b) Fe_{2}O_{3}_{(s)}+3CO \rightarrow 2Fe_{(s)}+3CO_{2}_{(g)}

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Solution-

Let us write the O.N of each element

\overset{\:\:+3\:\:-2}{Fe_{2}O_{3}}\:+ 3\overset{+2\:-2}{CO}\rightarrow 2\overset{0}{Fe}\:\:+  3\overset{+4\:\:-2}{CO_{2}}

Here, the O.N. of Fe decreases from +3 to 0. Also, the O.N. of C increases from +2 to +4. Hence, it is a redox reaction.

Posted by

Gautam harsolia

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