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CO2(g)+8H+ +8e¡úCH4(g)+2H2O E=-0.24 V
CO2(g)+6H+ +6e¡úCH3OH(aq)+H2O E=-0.38 V
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CO2(g)+2H+ +2e¡úCO(g)+H2O E=-0.52 V
CO2(g)+2H+ +2e¡úHCOOH(aq)E=-0.61 V
2CO2(g)+2H+ +2e¡úH2C2O4(aq)E=-0.90 V
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