Which of the following points are important in connection with equilibrium constant ?
Correct answer: D. All of the above
- A. Kc is constant at given temperature
- B. Kc is unaffected by change in concentration of reactants or products
- C. Kc indicates the extent of reaction but not about the rate of reaction.
- D. All of the above
Explanation
At a fixed temperature, Kc has a constant value and does not change when equilibrium concentrations are disturbed, although the equilibrium position shifts. Kc indicates the extent or position of a reaction, not how quickly equilibrium is reached, so all three statements are correct. A student may choose only a because it is the most familiar property and overlook the other two.
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About Reversible Reactions
A reversible reaction proceeds in both forward and backward directions, so reactants and products continue changing until dynamic equilibrium is established. The topic covers the meaning of equilibrium, the equality of forward and reverse rates, and how concentration, pressure and temperature disturb equilibrium, which is separate from the rate at which equilibrium is reached.
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