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For hydrogen oxygen fuel cell at atm and...

For hydrogen oxygen fuel cell at atm and 298 K
`H_(2)g+1/2O_(2)(g)rarrH_(2)O(l),triangle G^(@)=-240 KJ`
`E^(2)` for the cell is approximately (Gevien F=96500 C)

A

2.48 V

B

1.24 V

C

2.5 V

D

1.26 V

Text Solution

Verified by Experts

The correct Answer is:
B
From `triangle G^(@)=-nFE^(@)`
where n = number of moles of electrons transferred =2
`rarr F= 96500 C`
`triangle G^(@)=-240 kj =- 240xx1000 J`
`therefore E^(@) =(-24000)/(-2xx96500)=1.24 v`
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