The forward reaction is almost near completion if the value of Kc is:
Correct answer: B. Very large
- A. Very small
- B. Very large
- C. Unity
- D. Zero
Explanation
When Kc is very large, it means that the concetration of products is much higher than the concentration of reactants at equilibrium. This implies that the forward reaction has proceeded extensively, approaching completion. In other words most of the reactants have been converted into products. Thus, option B is correct.
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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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