1 mole each of `N_2(g)` and `O_2(g)` are introduced in a 1L evacuated vessel at 523 K and equilibrium `N_2(g)+O_(2)ghArr2NO(g)` is established.The concentration of `NO(g)` at equilibrium :

Options

A. Changes on changing volume of vessel
B. Changes on changing temperature
C. Changes on changing pressure
D. Remains same even when a platinum gauze is introduced to catalyse the reaction

Answer

A,B,C,D

Explanation

`N_2(g)+O_2(g)hArr 2NO(g)`
(A)For changing pressure volume has to be changed, though number of moles of NO(g) do not get changed but its concentration will get changed.
(B)Temperature change will change `K_P` and hence concentration.
( C)Volume change will change concentration, not the number of moles.
(D)Catalyst does not change equilibrium concentrations.