The equilibrium constant (Kc) for the reaction N2( g)+O2( g)⇌2NO(g) at temperature T is 4×10-4 The value of Kc, for the reaction, NO(g)⇌(1/2)N2( g)+(1/2)O2( g) at the same temperature is 

The equilibrium constant (Kc) for the reaction N2( g)+O2( g)2NO(g) at temperature T is 4×10-4 The value of Kc, for the reaction, NO(g)(1/2)N2( g)+(1/2)O2( g) at the same temperature is 

  1. A

    0.02

  2. B

    2.5×102

  3. C

    4×10-4

  4. D

    50.0

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    Solution:

    We have

    N2( g)+O2( g)2NO(g)    Kcl=[NO]2 N2O2

    NO(g)(1/2)N2( g)+(1/2)O2( g)  Kc2=N21/2O21/2[NO]

    Obviously, Kc2=1Kc1=14×10-4=12×10-2=50.0

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