Chemical equilibrium is a core topic in chemistry that explains the state in which the rates of forward and reverse reactions become equal, making it highly important for MDCAT, ECAT, NUST and FSC board exams. This chapter includes concepts such as reversible reactions, equilibrium constant (Kc and Kp), law of mass action, reaction quotient, and Le Chatelier’s principle. Understanding chemical equilibrium helps students predict the effect of changes in concentration, temperature, and pressure on a system, which is frequently tested in entry test MCQs. At PLS Academy, chemical equilibrium is taught with clear concepts, solved numericals, and exam-oriented MCQ practice to help aspirants score confidently in Entry Tests and board examinations.
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