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Equilibrium Constant (Kc)

Equilibrium Constant (Kc). For the reaction:. aA + bB ↔ cC + dD. Kc = [C] c [D] d. [A] a [B] b. Note : A pure solid or liquid has a constant concentration & does NOT appear in the equilibrium expression. The Meaning of Kc.

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Equilibrium Constant (Kc)

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  1. Equilibrium Constant (Kc) For the reaction: aA + bB ↔ cC + dD Kc = [C] c [D] d [A] a [B] b Note: A pure solid or liquid has a constant concentration & does NOT appear in the equilibrium expression.

  2. The Meaning of Kc If Kc is very large ([products] >> [reactants] at equilibrium), then the reaction will proceed nearly to completion. If Kc is very small ([products] << [reactants] at equilibrium), then hardly any products form. If Kc is 1, [products] = [reactants] at equilibrium.

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