1.

How many faradays of electric charge is required to liberate 5600cm^(3) of oxygen at STP?

Answer»

SOLUTION :`O^(2-)to(1)/(2)O_(2)+2e^(-)` or `2O^(2-)toO_(2)+4e^(-)`
Thus, 1 mole of `O_(2)`, i.e., 22400 `CM^(3)` requrie 4 faradays of charge.
`therefore5600cm^(3)` of `O_(2)` will REQUIRE charge `=(4)/(22400)xx5600=1` faraday.


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