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What would happen to a system at equilibrium if the temperature were
changed?
A. Equilibrium would not be affected.
B. Only the reaction rate would change.
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C. The system would lose the heat.
D. The equilibrium constant would change.


Sagot :

Answer: D. The equilibrium constant would change.

The equilibrium constant would change if the temperature were changed.

What is Equilibrium constant?

  • A chemical reaction's equilibrium constant is the value of its reaction quotient at chemical equilibrium, a condition reached by a dynamic chemical system after a period of time has passed in which its composition shows no discernible tendency to change.

Effect of temperature change on equilibrium constant

  • Changing the temperature of an equilibrium system has a different result: The value of the equilibrium constant fluctuates when the temperature changes.
  • The internal energy of the system grows as the temperature of the reaction rises. As a result, increasing the temperature causes one of the reaction's products to increase in quantity.
  • Lowering the system's temperature decreases the quantity of energy present and encourages heat generation.

Hence, the correct option is D.

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