The value of K (equilibrium constant) for a reaction?
Correct answer: B. Is different at different temperature
- A. Is the same at different temperature?
- B. Is different at different temperature
- C. Is negligible at room temperature
- D. Can be same at different temperatures
Explanation
The value of K (equilibrium constant) for a reaction can be different at different temperatures. This is because the equilibrium constant depends on the temperature of the reaction. According to the Arrhenius equation, the rate constant of a reaction increases with an increase in temperature. Therefore, the value of K changes with a change in temperature. Therefore, the value of K for a reaction is dependent on the temperature of the reaction and the enthalpy change of the reaction.
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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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