The calculated value of KP for the equilibrium: 2 NO(g) + Cl2(g) 2 NOCl(g) is 9.

Question

The calculated value of KP for the equilibrium:

2 NO(g) + Cl2(g) 2 NOCl(g)

is 9.20e+00 at 288 oC. For each of the mixtures described in the multiple choices figure out whether the mixture is reasonably close to being at equilibrium at 288 oC. "Reasonably close" means that Q is within a factor of 2 of KP. If the mixture is not close to equilibrium figure out which direction the reaction will shift (toward product or toward reactants) to achieve equilibrium. Choose the correct statement from the choices.



a) When PNO = 4.90 atm, PCl2 = 1.58 atm, and PNOCl = 79.7 atm the reaction is close to equilibrium.
b) When PNO = 6.86 atm, PCl2 = 3.19 atm, and PNOCl = 6.55 atm the reaction will shift toward reactants.
c) When PNO = 3.44 atm, PCl2 = 7.63 atm, and PNOCl = 28.8 atm the reaction is close to equilibrium.
d) When PNO = 4.13 atm, PCl2 = 4.08 atm, and PNOCl = 198 atm the reaction will shift toward product.
e) When PNO = 7.60 atm, PCl2 = 5.53 atm, and PNOCl = 6.81 atm the reaction will shift toward reactants.

Explanation / Answer

b) When PNO = 6.86 atm, PCl2 = 3.19 atm, and PNOCl = 6.55 atm the reaction will shift toward reactants.

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