Q.

The gas phase reaction 2Ag=A2g at 400K has ΔGo=+25.2 kj mol−1. The equilibrium constant Kc  for this reaction is ____×10−2.(Round off to the Nearest Integer)          [Use:R=8.3 J mol−1K−1,In 10=2.3 log102=0.30,1 atm=1 bar] [antilog (-0.3)=0.501]

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answer is 2.

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Detailed Solution

⇒Kc=Kp(RT)∆ng    =5.01×10-4 ×8.3×400  =1.66×10-5=1.66×10-5 m3/mole   =1.66×10-2=1.66×10-2 L/mol
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The gas phase reaction 2Ag=A2g at 400K has ΔGo=+25.2 kj mol−1. The equilibrium constant Kc  for this reaction is ____×10−2.(Round off to the Nearest Integer)          [Use:R=8.3 J mol−1K−1,In 10=2.3 log102=0.30,1 atm=1 bar] [antilog (-0.3)=0.501]