Q 2677701686.     In a fuel cell hydrogen and oxygen react to produces electricity. In the process hydrogen gas is oxidised at the anode and oxygen at the cathode. If `67.2` L of `H_2` at STP react in `15` min, what is the average current produced? If the entire current is used for electro deposition of copper from copper `(II)` solution, how many grams of copper will be deposited?
Anode reaction : `H_2 + 2OH^(-) -> 2H_2O + 2e^-`
Cathode reaction : `O_2 + 2H_2O + 2e^(-) -> 4OH^-`

JEE 1988
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