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The value of log(10)K for a reaction A h...

The value of `log_(10)K` for a reaction `A hArr B` is (Given: `Delta_(f)H_(298K)^(Theta) =- 54.07 kJ mol^(-1)`,
`Delta_(r)S_(298K)^(Theta) =10 JK^(=1) mol^(-1)`, and `R = 8.314 J K^(-1) mol^(-1)`

A

5

B

10

C

95

D

100

Text Solution

Verified by Experts

The correct Answer is:
B
`DeltaG^(@) = DeltaH^(@) - T DeltaS^(@)`
`=-54.07 xx 1000 - 298 xx 10 = -57050 J"mol"^(-1)`
`-57050 = -5705 log_(10)K`
`log_(10)K=10`
Hence, B is the correct answer.
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