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Determine the entropy change for the rea...

Determine the entropy change for the reaction
`2H_(2)(g) +O_(2)(g) rarr 2H_(2)O(l)`
at `300K`. If standard entropies of `H_(2)(g),O_(2)(g)` and `H_(2)O(l)` are `12.6, 201.20` and `68.0 J K^(-1) "mole"^(-1)` respectively.

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`DeltaS (Reaction) = sum S(Product) -sumS(Reactants)`
`=2 xx S_(H_(2)O) -[2xxS_(H_(2))+S_(O_(2))]`
`= 2 xx 68 -[2xx 12.6 +201.20]`
`DeltaS =- 318.4 J K^(-1) mol^(-1)`.
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