Final answer:
Increasing the temperature of the system at equilibrium causes the equilibrium to shift towards the side with fewer moles of gas. The state of balance or stability in a system where opposing forces or factors are in equal proportion, and there is no net change is equilibrium.
Step-by-step explanation:
According to Le Chatelier's principle, if pressure is increased, then the equilibrium shifts to the side with the fewer number of moles of gas. In this case, if the temperature of the system is increased, the equilibrium will shift towards the side with fewer moles of gas. This is because an increase in temperature causes an increase in the average kinetic energy of gas molecules, leading to an increase in the number of gas molecules colliding with each other and the container walls.
As a result, the pressure of the system increases, and the equilibrium shifts towards the side with fewer moles of gas to reduce the pressure.