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.

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