N2 (g) + 3H2 (g) + 2NH3 (9)

What will happen if pressure is increased?

equilibrium will shift to the right, and more NH3 will be formed

Explanation:

N2 (g) + 3H2 (g) - --> 2NH3 (g)

1 mol + 3 mol 2 mol

4 mol 2 mol

When we increase the pressure, the pressure will try to restore old value, so it has to become lower. Pressure is lower when number of particles is less

4 <2, so equilibrium will shift to the right, and more NH3 will be formed.