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For the fuel cell reaction 2H(2)(g) +O(2...

For the fuel cell reaction `2H_(2)(g) +O_(2)(g) rarr 2H_(2)O(l), Deta_(f)H_(298)^(@) (H_(2)O,l) =- 285.5 kJ//mol` What is `DeltaS_(298)^(@)` for the given fuel cell reaction?
Given: `O_(2)(g) +4H^(+)(aQ) +4e^(-) rarr 2H_(2)O(l) E^(@) = 1.23 V`

A

`-0.322 J//K`

B

`-0.635 kJ//K`

C

`3.51 kJ//K`

D

`-0.322kJ//K`

Text Solution

Verified by Experts

The correct Answer is:
D
`DeltaG^(@)=-nFE^(@),DeltaS^(@)=(DeltaH_(f)^(@)-DeltaG^(@))/(T)`
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