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The entropy change for the reaction give...

The entropy change for the reaction given below is
`2H_(2)(g)+O_(2)(g)rarr2H_(2)O(l)`
is ... At `300K` . Standard entropies of `H_(2)(g),O_(2)(g)` and `H_(2)O(l)` are `126.6,201.20` and `68.0JK^(-1)mol^(-1)` respectively.

A

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

B

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

C

`31.84xxJK^(-1)mol^(-1)`

D

None of these

Text Solution

Verified by Experts

The correct Answer is:
A
`DeltaS_("Reaction")=SigmaS_("product")-SigmaS_("reactant")`
`=2xxS_(H_(2)O)-[2xxS_(H_(2))+So_(2)]`
`=2xx68-[2xx126.6+201.20]=-318.4JK^(-1)mol^(-1)`
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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.

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