Answer : The equilibrium constant for the reaction will be,
Explanation :
The following equilibrium reactions are :
(1)
(2)
The final equilibrium reaction is :
Now we have to calculate the value of for the final reaction.
First we have to multiply equation (1) by 2 that means we are taking square of equilibrium constant 1 and reverse the equation 2 that means we are dividing equilibrium constant 2, we get the final equilibrium reaction and the expression of final equilibrium constant is:
Now put all the given values in this expression, we get :
Therefore, the value of for the final reaction is,