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  • Which of the following processes does not involve oxidation of iron ?Option: 1 Formation of Fe(CO)5 from Fe<div class='qna-o

Which of the following processes does not involve oxidation of iron ?

Option: 1

Formation of Fe(CO)5 from Fe


Option: 2

Liberation of H2 from steam by iron at high temperature


Option: 3

Rusting of iron sheets


Option: 4

Decolourization of blue CuSO4 solution by iron


Answers (1)

best_answer

The below reactions shows the oxidation state of iron for all given condition.

\mathrm{\overset{0}{ Fe }+5 CO \rightarrow{ } \overset{0}{Fe }( CO )_5}

\mathrm{ \overset{0}{Fe} + \underset{Steam}{H _2 O} \rightarrow \overset{+3}{Fe} _2 O _3 + H _2 }

\mathrm{ \overset{0}{Fe} + H _2 O + O _2 \rightarrow \overset{+3}{Fe} _2 O _3 . xH _2 O}

\mathrm{\overset{0}{ Fe }+ CuSO _4 \rightarrow \overset{+2}{Fe}SO _4+ Cu}

Clearly, During the formation of Fe(CO)5 from Fe, there is no change in the oxidation state of iron.

Option 1 is correct.

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Rishabh

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