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Standard molar entropies of Mg((s)), C((...

Standard molar entropies of `Mg_((s)), C_((s)), MgO_((s))` & `CO_((g))` respectively are `S_(1), S_(2), S_(3)` & `S_(4)` J/K/mol. Then `DeltaS_(sys)` for
`MgO_((s))+C_((s)) rarr Mg_((s))+CO_((g))`

A

`S_(1)+S_(2)+S_(3)+S_(4)`

B

`(S_(1)+S_(4))-(S_(2)+S_(3))`

C

`(S_(2)+S_(3))-(S_(1)+S_(4))`

D

`(S_(4)-S_(3))`

Text Solution

Verified by Experts

The correct Answer is:
B
`DeltaS=DeltaS_(P)-DeltaS_(R)`
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