Question

The number of electrons lost or gained during the change:-
Fe + H2O —> Fe3O4 + H2
(Please explain from scratch)

Answer 1

Hey dear,

● Answer -
Total 8 electrons are lost during this reaction.

● Explanation -
Balanced chemical reaction is
3Fe + 4H2O —> Fe3O4 + 4H2

In this reaction, Fe gets converted to Fe3O4.

Let's calculate,
Oxidation state of iron in Fe => 0
Oxidation state of iron in Fe3O4 => +8/3
Change in oxidation state => 8/3-0 = 8/3

Therefore, 8/3 electrons are lost by each Fe during this reaction.

* Total electrons lost in the reaction is 8.

Hope this helped you...