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Calculate the entropy change in surround...

Calculate the entropy change in surroundings when 1 mol of `H_2O_((l))` is formed under standard conditions. Given `DeltaH^Ө=-286 "kJ mol"^(-1)`

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`q_"rev"=(-Delta_fH^Ө)=-286 "kJ mol"^(-1) =286000 "J mol"^(-1)`
`DeltaS_"(Surroundings)"=q_"rev"/T=("286000 J mol"^(-1))/"298 K"=959 J K^(-1) "mol"^(-1)`
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