At constant temperature, the equilibrium constant (Kp) for the decomposition reaction. N2O4 2NO2 is expressed by,
Kp = (4x2P)/(1-x2)
where P= pressure, x = extent of decomposition. Which of the following statements is true?
(a) Kp increases with increase of P
(b) Kp increases with increase of x
(c) Kp increase with decrease of x
(d) Kp remains constant with change in P of x