A very small value of 'Kc' for a reaction at equilibrium indicates:
Correct answer: B. Very small amount of products
- A. Very small amount of reactants
- B. Very small amount of products
- C. The rate of backward reaction is greater than that of the forward one
- D. The rate of forward reaction is greater than that of the backward one
Explanation
If 'Kc' is a small number, it means that the equilibrium concentration of the reactants is large while that are products is small. In this case, the reaction, as written, will proceed to the left (resulting in an increase in the concentration of reactants).
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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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