question_answer

At constant temperature, the equilibrium constant (\[Kp\]) for the decomposition reaction \[{{N}_{2}}{{O}_{4}}\rightleftarrows 2N{{O}_{2}}\] is expressed by \[{{K}_{P}}=\frac{(4{{x}^{2}}p)}{(1-{{x}^{2}})}\], where p=pressure, x=extent of decomposition. Which one of the following statements is true?

A)  \[{{K}_{P}}\]increases with increase of p

B) \[{{K}_{P}}\]increases with increase of x

C) \[{{K}_{P}}\]increases with decrease of x

D) \[{{K}_{P}}\]remains constant with change in p and x