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Question
Following reaction occurs at 25oC:
2NO(g,1×10−5atm)+Cl2(g,1×10−2atm)⇌2NOCl (g,1×10−2atm)
ΔGo is_______________.
Following reaction occurs at 25oC:
2NO(g,1×10−5atm)+Cl2(g,1×10−2atm)⇌2NOCl (g,1×10−2atm)
ΔGo is_______________.
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Solution
The correct option is A −45.65kJ
2NO1×10−5atm+Cl21×10−2atm⇌2NOCl1×10−2atmKp=(PNOCl)2(PNO)2(PCl2) =(1×10−2)2(1×10−5)2×1×10−2 =1×10−21×10−10=1×108Δu=−RTlnKp=−8.314×298×ln108 =−8.314×298×8×ln10 =−8.314×298×8×2.3 =−45.587J/Kg =−45.6kJ .
2NO1×10−5atm+Cl21×10−2atm⇌2NOCl1×10−2atm
Kp=(PNOCl)2(PNO)2(PCl2)
=(1×10−2)2(1×10−5)2×1×10−2
=1×10−21×10−10=1×108
Δu=−RTlnKp=−8.314×298×ln108
=−8.314×298×8×ln10
=−8.314×298×8×2.3
=−45.587J/Kg
=−45.6kJ .
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