In the reaction 2FeCl3 + SnCl2 -> 2FeCl2 + SnCl4, which species is the oxidizing agent?
Show the answer and explanation
Correct answer
A. Fe3+
Principle or equation
The oxidizing agent is the species that is reduced (gains electrons). In this reaction, Fe3+ is reduced to Fe2+ (oxidation state decreases from +3 to +2), so Fe3+ is the oxidizing agent.
Why this answer is correct
Fe3+ gains an electron to become Fe2+, so it is reduced and acts as the oxidizing agent. Sn2+ is oxidized to Sn4+, so it is the reducing agent. Cl- does not change oxidation state.
Example
In 2FeCl3 + H2S -> 2FeCl2 + S + 2HCl, Fe3+ is the oxidizing agent.
This published item includes a stored explanation and passed the platform’s publication workflow. It is independent preparation material, not a claim of an official or recalled examination question.