InterviewSolution
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InterviewSolution
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For the reaction `CO (g) + (1)/(2) O_(2) (g) rarr CO_(2) (g)` using data given in table find out incorrect statement (s) among the following `{:(,Delta H_(f)^(@) (kJ//"mole"),S^(@) (J//K"mole"),),(CO (g),-110,+197,),(O_(2) (g),0,+205,),(CO_(2) (g),-395,+213,):}` Assume vibration modes of motion do not contribute to heat capacity at low temperature.A. `Delta H^(@) gt Delta U^(@)` for the reaction at 298 KB. In standard state conditin, the rection `CO (g) + (1)/(2) O_(2) (g) rarr CO_(2) (g)` attain equilibrium at very hight temperature.C. At low temperature `(d(Delta H)^(@))/(dT) = - ve`D. In a `CO, O_(2)` fuel cell electrical energy obtained by cell `gt |Delta H_("combustion")^(@) [CO (g)]|` |
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Answer» Correct Answer - A `DeltaH^(@)-DeltaU^(@)=Deltan_(g)RT` since `Deltan_(g)=-ve` `rArr DeltaH^(@)-DeltaU^(@) lt 0` `DeltaH^(@)=-ve` `DeltaS^(@)=-ve" "," "C_(p)=3/2 R+R" "," "=5/2 R` `Delta_(r)C_(p)=-ve` |
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