Solve this:
The Initial pressure of COCl2 is 1000 torr. The total
pressure of the system becomes 1500 torr,when
the equilibrium COCl2(g) CO(g)+Cl2(g) is
attained at constant temperature. The value of Kp
of a reaction
(1) 1500
(2) 1000
(3) 2500
(4) 500