Which is the correct half-equation for the anode reaction in an alkaline hydrogen…

CHEMISTRY · Single correct · AP · Chemistry · Thermodynamics and Electrochemistry · Thermodynamics and Electrochemistry

Problem

Which is the correct half-equation for the anode reaction in an alkaline hydrogen fuel cell? (1) H2(g)+2OH−(aq)→2H2O(l)+2e−\text{H}_2(\text{g}) + 2\text{OH}^-(\text{aq}) \rightarrow 2\text{H}_2\text{O}(\text{l}) + 2\text{e}^- (2) O2(g)+2H2O(l)+2e−→4OH−(aq)\text{O}_2(\text{g}) + 2\text{H}_2\text{O}(\text{l}) + 2\text{e}^- \rightarrow 4\text{OH}^-(\text{aq}) (3) H2(g)→2H+(aq)+2e−\text{H}_2(\text{g}) \rightarrow 2\text{H}^+(\text{aq}) + 2\text{e}^- (4) H2(g)+12O2(g)→H2O(l)\text{H}_2(\text{g}) + \frac{1}{2} \text{O}_2(\text{g}) \rightarrow \text{H}_2\text{O}(\text{l})

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