Question

Write the reaction of formation of Fe2+ by reduction Fe3+ by making use of the symbol (e-).

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Answer 1

Addition of electron is reduction.

Fe+3  +   (e-)   --------->    Fe+2

In the above reaction the Ferric ion (+3) is reduced to Ferrous ion(+2).
(Also note that charge is balanced on both sides of the reaction.)

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Answer 2

Answer: $Fe^{3+}+e^-\rightarrow Fe^{2+}$

Explanation: Reduction is the process in which an ion gains an electron. The oxidation state in this reaction is reduced.

The reaction for the reduction of $Fe^{3+}$ is given by:

$Fe^{3+}+e^-\rightarrow Fe^{2+}$

In this reaction, the oxidation state of iron is getting reduced from 3+ to 2+.