## Oxidation-Reduction Reactions### Question 13Which of the following chemical equations show oxidation-reduction reactions?1. \( \text{Ca} + \text{I}_2 \rightarrow \text{CaI}_2 \)2. \( \text{Pb(ClO}_4\text{)}_2 + 2\text{KI} \rightarrow \text{PbI}_2 + 2\text{KClO}_4 \)3. \( \text{Fe}_2\text{O}_3 + 3\text{CO} \rightarrow 2\text{Fe} + 3\text{CO}_2 \)**Options:**- 1 and 2- 1 and 3- 2 only- 2 and 3### AnalysisReview each reaction to determine if there is a transfer of electrons, characterizing it as an oxidation-reduction (redox) reaction.1. **Reaction 1:** - Calcium (\( \text{Ca} \)) is oxidized, and iodine (\( \text{I}_2 \)) is reduced, indicating a redox reaction.2. **Reaction 2:** - There is no change in oxidation states between reactants and products, indicating it is not a redox reaction.3. **Reaction 3:** - Iron (\( \text{Fe}_2\text{O}_3 \)) is reduced, and carbon monoxide (\( \text{CO} \)) is oxidized, indicating a redox reaction.Thus, reactions 1 and 3 are oxidation-reduction reactions.

Oxidation is Increase in oxidation number. Reduction is decrease in oxidation number.

Answered: 13) Which of the following chemical…

13) Which of the following chemical equations show oxidation-reduction reactions? Ca+12→→ Cal₂ Pb(ClO4)2 +2KI → Pbl₂ + 2KC104 Fe + 3CO2 Fe2O3+3CO2 1 and 2 1 and 3 2 only 2 and 3

Chemistry

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Chapter1: Chemical Foundations

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