9. Assign oxidation numbers, find reductant and oxidant atoms and tie them before and after, then balance each molecular redox equation by the oxidation number method: HNO3 + _ CO → NO + _ CO2 + __ H2O reductant atom: oxidant atom: HCI + H2O2 →- HCIO2 + |oxidant atom: H20 reductant atom: - -

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**Exercise 9**

**Objective:** Assign oxidation numbers, identify the reductant and oxidant atoms, and detail their involvement before and after the reaction. Then, balance each molecular redox equation using the oxidation number method.

1. **Equation:**  
   \_\_ HNO₃ + \_\_ CO → \_\_ NO + \_\_ CO₂ + \_\_ H₂O  
   - **Reductant atom:** \_\_\_  
   - **Oxidant atom:** \_\_\_

2. **Equation:**  
   \_\_ HCl + \_\_ H₂O₂ → \_\_ HClO₂ + \_\_ H₂O  
   - **Reductant atom:** \_\_\_  
   - **Oxidant atom:** \_\_\_

**Instruction:** Analyze the changes in oxidation states and verify atom conservation through the balancing process.
Transcribed Image Text:**Exercise 9** **Objective:** Assign oxidation numbers, identify the reductant and oxidant atoms, and detail their involvement before and after the reaction. Then, balance each molecular redox equation using the oxidation number method. 1. **Equation:** \_\_ HNO₃ + \_\_ CO → \_\_ NO + \_\_ CO₂ + \_\_ H₂O - **Reductant atom:** \_\_\_ - **Oxidant atom:** \_\_\_ 2. **Equation:** \_\_ HCl + \_\_ H₂O₂ → \_\_ HClO₂ + \_\_ H₂O - **Reductant atom:** \_\_\_ - **Oxidant atom:** \_\_\_ **Instruction:** Analyze the changes in oxidation states and verify atom conservation through the balancing process.
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