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Calculate the total entropy change for t...

Calculate the total entropy change for the transition at 368K of 1mol of sulphur from the monoclinic to the rhombic solid state, if `DeltaH=-401.7J ,mol^(-1)` "for the transition". Assume the surroundings tio be an ice-water bath at `0^(@)C`:

A

`-1.09 JK^(-1)`

B

`1.477 Jk^(-1)`

C

`0.38 JK^(-1)`

D

None of these

Text Solution

Verified by Experts

The correct Answer is:
C
`DeltaS_(("system")) =(1xx-401.7)/(368) =-1.09 JK^(-1)`
The ice -water both absorbs the `401.7 J mol^(-1)` at temperature `273 K`
`therefore" " DeltaS_("surrounding") = (1xx401.7)/(273) = 1.47 JK^(-1)` and `DeltaS_(("universe")) =- 1.09 + 1.47 = 0.38 JK^(-1)`
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