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Ag → Ag intercambiar electrones
3e⁻ + 4H⁺ + (NO3)⁻¹ → NO +2H2O
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3Ag⁰ + 4H⁺ + (NO3)⁻¹ → Ag⁺¹ + NO + 2H2O
3Ag + 4HNO3 -----> 3AgNO3 + NO + 2H2O
B.
MnO₂ + 4H⁺ + 2e⁻ → Mn⁺² + 2 H2O intercambiae e⁻ y simpli-
2 Cl⁻ → Cl₂ + 2e⁻ carlos
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MnO₂ + 4H⁺ + 2 Cl⁻ → Mn⁺² + 2 H2O + Cl₂
MnO2 + 4HCl ---->MnCl2 + 2H2O + Cl2