In the following reaction, what is the effect of adding more NO2 to the starting reaction mixture?

2NO2 (g) ⇌ N2O4 (g)

It would increase the final quantity of products

It would decrease the final quantity of products

It would slow the reaction down

It would make the reaction more exothermic

It would increase the final quantity of products

Explanation:

According to the Le - Chatelier principle,

At equilibrium state when stress is applied to the system, the system will behave in such a way to nullify the stress.

The equilibrium can be disturb,

By changing the concentration

By changing the volume

By changing the pressure

By changing the temperature

Consider the following chemical reaction.

Chemical reaction:

2NO₂ ⇄ N₂O₄

In this reaction the equilibrium is disturb by increasing the concentration of reactant.

When the concentration of reactant is increased the system will proceed in forward direction in order to regain the equilibrium. Because when reactant concentration is high it means reaction is not on equilibrium state. As the concentration of NO₂ increased the reaction proceed in forward direction to regain the equilibrium state and more product is formed.