Consider the reaction: N2(g) 2 O2(g)N2O4(g) Write the equilibrium constant for this reaction in terms of the equilibrium constants, Ka and Kb, for reactions a and b below: a.) N2O4(g) 2NO2(g) Ka b.) 1/2 N2(g) O2(g) NO2(g) Kb

Answer : The equilibrium constant for this reaction is,

Explanation :

The given main chemical reaction is:

;  

The intermediate reactions are:

(1) ;  

(2) ;  

We are reversing reaction 1 and multiplying reaction 2 by 2 and then adding both reaction, we get:

(1) ;  

(2) ;  

Thus, the equilibrium constant for this reaction will be:

Thus, the equilibrium constant for this reaction is,

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