Influence of pressure, temperature, concentration and addition of inert gas on a reversible chemical reaction in equilibrium can be explained by formulating the expression for equilibrium constant `K_(c)` or `K_(p)` for the equilibrium. On the other hand Le Chatelier principle can be theoretically used to explain the effect of `P`, `T` or concentration on the physical or chemical equilibrium both.
`N_(2)O_(4)` is `66%` dissociated into `NO_(2)` at `340K` and `1` atmospheric pressure. The volume occupied by `10gN_(2)O_(4)` under these conditions is: