In the reaction 2Fe²⁺ + Cl2 → 2Fe³⁺ + 2Cl⁻, which element is oxidized? (2021)

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Question: In the reaction 2Fe²⁺ + Cl2 → 2Fe³⁺ + 2Cl⁻, which element is oxidized? (2021)

Options:

Correct Answer: Fe

Exam Year: 2021

Solution:

Iron (Fe) is oxidized from +2 to +3 oxidation state in this reaction.

In the reaction 2Fe²⁺ + Cl2 → 2Fe³⁺ + 2Cl⁻, which element is oxidized? (2021)

In the reaction 2Fe²⁺ + Cl2 → 2Fe³⁺ + 2Cl⁻, which element is oxidized? (2021)

Step 1: Identify the reactants and products in the reaction: 2Fe²⁺ + Cl2 → 2Fe³⁺ + 2Cl⁻.
Step 2: Look at the oxidation states of iron (Fe) in the reactants and products.
Step 3: In the reactants, iron (Fe) has an oxidation state of +2 (Fe²⁺).
Step 4: In the products, iron (Fe) has an oxidation state of +3 (Fe³⁺).
Step 5: Determine if the oxidation state of iron increased or decreased. It increased from +2 to +3.
Step 6: Conclude that since the oxidation state of iron increased, iron (Fe) is oxidized in this reaction.

Oxidation and Reduction – Understanding the transfer of electrons and changes in oxidation states in redox reactions.
Oxidation States – Identifying the oxidation states of elements before and after a reaction to determine which is oxidized or reduced.