An equeous solution of `Na_(2)SO_(4)` was electrolysed for 10 min. 82 ml of a gas was produced at anode and collected over water at `27^(@)C` at a total pressure of 580 torr. Determine the current that was used in amp. Given: Vapour pressure of `H_(2)O` at `27^(@)C = 10` torr `R = 0.082 atm L//mol-K` Write your answer exclusing decimal places.

An equeous solution of `Na_(2)SO_(4)` was electrolysed for 10 min. 82

1.	An equeous solution of `Na_(2)SO_(4)` was electrolysed for 10 min. 82 ml of a gas was produced at anode and collected over water at `27^(@)C` at a total pressure of 580 torr. Determine the current that was used in amp. Given: Vapour pressure of `H_(2)O` at `27^(@)C = 10` torr `R = 0.082 atm L//mol-K` Write your answer exclusing decimal places.
Answer» Correct Answer - 1 An anode reaction will be `2H_(2)O rarr O_(2) +4H^(+) +4e^(-)` `Vo_(2)` collected `= 82 ml` By `PV = nRT ((580 -10))/(760) xx (82)/(1000) = (n_(o_(2))) xx 0.0821 xx 300` `(n_(o_(2)) =(1)/(400))` By Faraday law `(W)/(E) = (i xx t)/(96500)` `((W)/(M)) xx n = (ixxt)/(96500) ((1)/(400)xx4) = (ixx 10 xx 60)/(96500)` `i= 1.6`

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