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An aqueous solution of Na(2)SO(4) was el...

An aqueous 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 excluding decimal places.

A

`0.1` Amp

B

`1.25` Amp

C

`2.23` Amp

D

`1.61` Amp

Text Solution

Verified by Experts

The correct Answer is:
D
`(1)/(2) H_(2)O rarr (1)/(4)O_(2)+H^(+)+e^(-)`
`n_(O_(2))=(PV)/(RT)= (((580-10))/(760)xx82xx10^(-3))/(0.082xx300)=2.5xx10^(-3)`
`i=(q)/(t)=(n_(e ).F)/(t)=(n_(O_(2))xx4xx96500)/(10xx60)=1.61` Amp.
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