EQUILIBRIUM

Many chemical reactions do not proceed to completion; instead, they reach a state where forward and reverse reactions occur simultaneously at equal rates. This state, called chemical equilibrium, is not static but dynamic—molecules continuously react in both directions while macroscopic properties remain constant. Understanding equilibrium is crucial for predicting reaction outcomes, designing chemical processes, and comprehending biological systems. From acid-base equilibria in blood to dissolution of sparingly soluble salts to atmospheric chemistry, equilibrium principles govern countless natural and industrial processes. This chapter explores reversible reactions, the equilibrium constant, Le Chatelier's principle, and applications of equilibrium concepts.

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