There are various factors that will affect the position of an equilibrium.

Here are three simple experiments that show the effect on an equilibrium of changing one or other of the components of that equilibrium.

There is no need to do all of them. Any one will demonstrate the principle.

Changing the Position of an Equilibrium – Pupil

Changing the Position of an Equilibrium – Teacher/Technician

Changing the Position of an Equilibrium – Risk Assessment