Question

In a vessel $N_2$, $H_2$ and $NH_3$ are at equilibrium. Some helium gas is introduced into the vessel so that total pressure increases while temperature and volume remain constant. According to Le Chatelier's principle, the dissociation of $NH_3$

• A. increases
• B. decreases
• C. remains unchanged
• D. equilibrium is disturbed

Answer 1

Answer: (C)

remains unchanged

Answer 2

The backward reaction is not favoured at high pressure.