Answer:
Fe3+ + 3e– --------> Fe
Explanation:
Reduction refers to a gain of electrons. A specie is said to be reduced when it gains electrons or when it experiences a decrease in oxidation number. The both sentences above can be clearly seen when inspecting a reduction half equation.
Consider the redox reaction half equation;
Fe3+ + 3e– ------>Fe
We can see that Fe^3+ accepted three electrons, the oxidation number of iron thereby decreased from +3 to zero from left to right. This implies that the Fe^3+ was actually reduced according to the equation shown.
Equation which represents a reduction half - reaction is Fe³⁺ + 3e⁻ → Fe.
Reduction is a process in which addition of hydrogen or electron or removal of oxygen takes place.
From the given reaction, only last reaction represents a reduction half -reaction as:
Fe³⁺ + 3e⁻ → Fe
In this reaction on the left side iron is present in +3 oxidation state and due to addition of 3 electrons it converts into Fe atom which is in 0 oxidation state on the right side. So, due to addition of electrons reduction takes place.
Hence, Fe³⁺ + 3e⁻ → Fe represents a reduction half-reaction.
To learn more about reduction, visit the below link:
https://brainly.com/question/2491738
