Pure solid addition - Equilibrium

The video explains that solid reactants or products do not affect chemical equilibrium. Using the dissociation of calcium carbonate as an example, it shows that adding or removing solids like calcium carbonate or calcium oxide does not disturb equilibrium. The QC value, which equals KC in equilibrium reactions, is independent of solid concentrations, as these are considered unity and excluded from the QC expression. Thus, the position of equilibrium remains unaffected by changes in the amount of solid components.

What happens to the chemical equilibrium when solid calcium carbonate is added to the reaction mixture?

Explain why the position of equilibrium is independent of the amount of solid or liquid component added.

What is the QC expression for the decomposition reaction of calcium carbonate?

Discuss the significance of the observation that the addition or removal of solid does not influence chemical equilibrium.

How does the concentration of solids affect the QC value in equilibrium reactions?