Balance the following equation using half reaction method: Cu + NO-3

1.	Balance the following equation using half reaction method: Cu + NO-3 → Cu2+ + NO2
Answer» Separating into half reactions: Oxidation half: Cu → Cu²⁺ Reduction half: NO^-₃ → NO₂ Balancing oxygen and hydrogen atoms: NO^-₃ + 2H⁺ → NO₂ + H₂O Balancing charge by adding electrons and making the number of electrons equal in the two half reactions: Cu → Cu²⁺ + 2e^- 2NO^-₃ + 4H⁺ + 2e^- → 2NO + 2H₂O Adding the two half reactions to achieve the overall reaction: Cu + 2NO₃ + 4H⁺→ Cu²⁺ + 2NO₂ + 2H₂O

Balance the following equation using half reaction method: Cu + NO-3 → Cu2+ + NO2

Answer»

Separating into half reactions:

Oxidation half: Cu → Cu²⁺

Reduction half: NO^-₃ → NO₂

Balancing oxygen and hydrogen atoms:

NO^-₃ + 2H⁺ → NO₂ + H₂O

Balancing charge by adding electrons and making the number of electrons equal in the two half reactions:

Cu → Cu²⁺ + 2e^-

2NO^-₃ + 4H⁺ + 2e^- → 2NO + 2H₂O

Adding the two half reactions to achieve the overall reaction:

Cu + 2NO₃ + 4H⁺→ Cu²⁺ + 2NO₂ + 2H₂O

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Balance the following equation using half reaction method: Cu + NO-3 → Cu2+ + NO2

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