Which one of the following statements is incorrect for Kc?
Correct answer: D. It tells us about rate of reaction
- A. It may or may not have units
- B. It does not depend upon concentrations of reactants and products
- C. It is associated with temperature
- D. It tells us about rate of reaction
Explanation
Option A is correct because Kc can have units or be unitless depending on the reaction's stoichiometry.Option B is correct as Kc is constant for a given reaction at a specific temperature and does not change with concentrations.Option C is correct since Kc varies with temperature, affirming its temperature dependence.Option D is the incorrect statement, as Kc relates to the position of equilibrium rather than the rate of reaction, which is determined by kinetics.
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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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