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Método redox
 

Método redox

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    Método redox Método redox Presentation Transcript

    • Ecuaciones y números deoxidación: Cu + HNO3Cu (NO3)2 + H2O + NO Cu0 + H+1N+5O-2  Cu+2(N+5 O-23)2 + H2+1 O-2 + N+2 O-2 oxidación reducción Oxidación: 0 a +2 (-2e-) Reducción: +5 a +2 (+3e-)
    • Semireacciones: 3(Cu0 -2e-  Cu+2) 2(N+5 +3e-  N+2) 3Cu0 – 6e-  3Cu+2 2N+5 + 6e-  2N+2 3Cu+0 + 2N +5  3Cu+2+ 2N+2 3Cu + 2HNO3  3Cu (NO3)2 + H2O + 2NO (no están balanceadas por Redox)
    • Balanceo por tanteo: 2Cu +8HNO3  3Cu (NO3)2 + 4H2O + 2NO 3-Cu-3 8-N-8 8-H-8 24-O-24