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KCET 2015 Chemistry Solved Paper

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Question : 19

Total: 60

In H2−O2 fuel cell the reaction occurring at cathode is

2H2)(g)+O2(g)→2H2O(l)
O2(g)+2H2O(l)+ 4e−→4OH−(aq)
H++e−→
1
2
H2
H+(aq)+OH−(aq)→H2O(l)

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