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In a reaction at equilibrium, if the temperature is decreased, what will happen

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Question: In a reaction at equilibrium, if the temperature is decreased, what will happen to the equilibrium position if the reaction is exothermic?

Options:

  1. Shift to the right
  2. Shift to the left
  3. No change
  4. Depends on the concentration

Correct Answer: Shift to the right

Solution: 

For an exothermic reaction, decreasing the temperature shifts the equilibrium to the right, favoring the formation of products.

In a reaction at equilibrium, if the temperature is decreased, what will happen

Practice Questions

Q1
In a reaction at equilibrium, if the temperature is decreased, what will happen to the equilibrium position if the reaction is exothermic?
  1. Shift to the right
  2. Shift to the left
  3. No change
  4. Depends on the concentration

Questions & Step-by-Step Solutions

In a reaction at equilibrium, if the temperature is decreased, what will happen to the equilibrium position if the reaction is exothermic?
  • Step 1: Understand what an exothermic reaction is. It is a reaction that releases heat.
  • Step 2: Know that in a chemical reaction at equilibrium, the system can respond to changes in temperature.
  • Step 3: Recognize that decreasing the temperature means removing heat from the system.
  • Step 4: Since the reaction is exothermic, the system will try to produce more heat to counteract the decrease in temperature.
  • Step 5: To produce more heat, the equilibrium will shift to the right, favoring the formation of products.
  • Le Chatelier's Principle – This principle states that if a system at equilibrium is subjected to a change in temperature, pressure, or concentration, the system will adjust to counteract that change and restore a new equilibrium.
  • Exothermic Reactions – In exothermic reactions, heat is released as a product, and a decrease in temperature will shift the equilibrium towards the products to produce more heat.
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