Points to consider
This equilibrium is a good one to use to demonstate the effect of temperature on equilibrium position. Using a reduced-scale apparatus has several advantages over the larger, more traditional method. Thinking of questions you're going to ask students during the demonstration before you start will ensure that they achieve the outcomes that you're aiming for.
Why is it easy to follow the change in equilibrium composition in this experiment?
What advantages does the use of a reduced-scale apparatus have in demonstrating this experiment?
What questions might you ask students before the demonstration?