Which one of the following factors can change the value of Kc?
Correct answer: A. Temperature
- A. Temperature
- B. Pressure
- C. Concentration of reactants
- D. Concentration of products
Explanation
The numerical value of Kc and Kp for a reaction changes with change of temperature. There are three possibilities. Case # I If ∆H = 0 → Kc remains same at different temperature. Case # II If ∆H= + → Kc increases with the increase of temperature. Case # III If ∆H = - → Kc decreases with the increase of temperature.
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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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