InterviewSolution
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InterviewSolution
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For the reaction, , `2A(g)+B(g) rarr 2D(g), DeltaU^(@) = - 10.5 kJ` and`DeltaS^(@) = - 44.10JK^(-1)` Calculate `DeltaG^(@)` for the reaction and predict whether the reaction may occur spontaneously. |
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Answer» For the given reaction,`Deltan_(g) =2- ( 3)= - 1` `:. DeltaH^(@) =DeltaU^(@) + Deltan_(g) RT =- 10.5 kJ + ( -1) ( 8.314 xx 10^(-3) kJ ) ( 298) = - 10.5-2.48= - 12.98 kJ` `DeltaG^(@) = DeltaH^(@)- T DeltaS=-12.98 kJ -298 ( -44.1xx 10^(-3) kJ)=-12.98 kJ+13.14 kJ =0.16 kJ ` As`DeltaG^(@) `comes out to be `+ve`,the reaction will not occur spontaneously. |
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