At constant temperature, as the pressure of a gaseous mixture in equilibrium increases, the equilibrium constant
Correct answer: A. remains constant
- A. remains constant
- B. increase
- C. decrease
- D. varies
Explanation
When the pressure of a gaseous mixture in equilibrium increases at constant temperature, the equilibrium constant remains constant. This is because changes in pressure do not affect the equilibrium constant, which is determined solely by the concentrations of the reactants and products. The other options are incorrect because pressure changes do not cause the equilibrium constant to increase, decrease, or vary; it stays the same due to the equilibrium position being unaffected by pressure changes at constant temperature.
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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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