For the exothermic reaction A + B ⇌ C + D, what effect does increasing the tempe

Practice Questions

Q1
For the exothermic reaction A + B ⇌ C + D, what effect does increasing the temperature have on the equilibrium? (2020)
  1. Shifts to the left
  2. Shifts to the right
  3. No change
  4. Increases Kc

Questions & Step-by-Step Solutions

For the exothermic reaction A + B ⇌ C + D, what effect does increasing the temperature have on the equilibrium? (2020)
  • Step 1: Understand that an exothermic reaction releases heat.
  • Step 2: Recognize that in the reaction A + B ⇌ C + D, the products (C and D) are formed from the reactants (A and B).
  • Step 3: Know that increasing the temperature adds heat to the system.
  • Step 4: Apply Le Chatelier's Principle, which states that if a change is made to a system at equilibrium, the system will adjust to counteract that change.
  • Step 5: Since the reaction is exothermic, adding heat will shift the equilibrium to the left, meaning it will favor the reactants (A and B).
  • Step 6: Conclude that increasing the temperature causes the equilibrium to shift towards the reactants.
  • Le Chatelier's Principle – This principle states that if a dynamic equilibrium is disturbed by changing the conditions, the position of equilibrium shifts to counteract the change.
  • Exothermic Reactions – In exothermic reactions, heat is released, and increasing temperature can shift the equilibrium towards the reactants.
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