8.3 Justify that the following reactions are redox reaction

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

Answers (1)

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.

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