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Calculate the entropy change for a react...

Calculate the entropy change for a reaction:
`XrarrY`
Given that `DeltaH^(Theta) = 28.40 kJ mol^(-1)` and equilibrium constant is `1.8 xx 10^(-7) at 298K`.

Text Solution

Verified by Experts

`DeltaG^(Theta) =- 2.303 xx 8.314 xx 298 xx log 1.8 xx 10^(-7) = 38.484`
`DeltaS^(Theta) = (DeltaH^(Theta) -DeltaG^(Theta))/(T) = (28.40 -38.484)/(298)`
`=- 0.0338 kJ mol^(-1)K^(-1)`
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