Physical and chemical equilibrium can respond to a change in their pressure, temperature, and concentration of reactants and products. To describe the change in the equilibrium we have a principle named Le Chatelier principle. According to this principle, even if we make some changes in equilibrium, then also the system even re-establishes the equilibrium by undoing the effect.
In the reaction `N_(2)(g)+3H_(2)(g) hArr 2NH_(3)(g)`. If we increase the pressure of the system, the equilibrium is

Options

A. Shifts in the product side
B. Remains unchanged
C. Shifts in the reactant side
D. Cannot be predicted

Answer

A

Explanation

According to Le Chatelier's principle, on adding `O_(2)` at equilibrium, more of `SO_(2)` will react with `O_(2)` to gives `SO_(3)`. So reaction shifts to the product side. Moreover volume of reaction vessel is reduced, i.e., pressure has increased, so the reaction shifts in the `RHS`, since there are less number of moles.