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Determine the entropy change for the rea...

Determine the entropy change for the reaction given below:
`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 `126.6, 201.20`, and `68.0 J K^(-1) mol^(-1)`, respectively.

A

`-318.4 JK^(-1)mol^(-1)`

B

`-219.3 JK^(-1)mol^(-1)`

C

`-111.12 JK^(-1)mol^(-1)`

D

`-432.21 JK^(-1)mol^(-1)`

Text Solution

Verified by Experts

`Delta S_("Reaction")=Sigma S_("Product")-Sigma S_("Reactants")`
`Delta S_("Reaction")=2xx S_(H_(2)O)-[2xxS_(H_(2))+S_(O_(2))]`
`Delta S_("Reaction")=2xx68-[2xx126.6+201.20]`
`Delta S_("Reaction")=-318.4 JK^(-1)mol^(-1)`
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