Effect of concentration change on equilibrium

The video explains how changes in concentration affect chemical equilibrium. When a substance is added or removed, it creates stress, disturbing the equilibrium. The chemical reaction then shifts to relieve this stress, partially restoring the concentration. An example of hydrogen iodide formation in a closed container is discussed. Adding hydrogen gas increases its concentration, creating stress. Le Chatelier's principle is applied to shift the reaction towards the formation of hydrogen iodide, restoring equilibrium.

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