The gas phase reaction `2NO_(2)(g) rarr N_(2)O_(4)(g)` is an exothermic reaction. The decomposition of `N_(2)O_(4)` in equilibrium mixture of `NO_(2)(g) and N_(2)O_(4)` can be increased by :

Options

A. addition of an inert gas at constant pressure
B. lowering the temperature
C. increasing the pressure
D. addition of an inert gas at constant volume

Answer

C

Explanation

According to Le chatelier.s principle-
Increasing the pressure on a gas reaction shifts the position of equilibirium towards the side with fewer molecules.
So, It will move in backward direction which leads to formation of `N_(2)O_(4)` from `NO_(2)`