For a certain reaction, Kc is found to be 1058. This numerical value of Kc is an indication that:
Correct answer: A. The reaction is almost completed
- A. The reaction is almost completed
- B. The equilibrium is established
- C. The reaction does not proceed to products
- D. The reaction proceeds to reactants
Explanation
The correct answer is that the reaction is almost completed. A very large equilibrium constant, such as 1058, indicates that the equilibrium position is heavily shifted toward the products, meaning the reaction proceeds almost to completion. This suggests that the concentrations of products are much higher than those of reactants at equilibrium. Option B is incorrect because while equilibrium is established, it does not specify the direction of the shift. Options C and D are incorrect as they contradict the implication of a large Kc value, which indicates a strong favorability towards products.
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About Chemical Equilibrium
Reversible reactions reach dynamic equilibrium when forward and reverse rates become equal, and Le Chatelier's principle predicts the effect of changing concentration, pressure or temperature. The chapter also covers solubility product, the common ion effect, buffer action and the conditions used in Haber's process, with equilibrium shifts distinguished from changes in the equilibrium constant.
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