Chemical Equilibrium Quiz for High School Chemistry Students

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Questions and Answers

What is the state in which the rates of the forward and reverse reactions are equal?

  • Static equilibrium
  • Thermal equilibrium
  • Chemical equilibrium
  • Dynamic equilibrium (correct)

Which factor does not affect the position of equilibrium in a chemical reaction?

  • Catalysts (correct)
  • Concentration of reactants
  • Pressure
  • Temperature

What happens to the equilibrium position when the pressure is increased in a reaction involving a decrease in the number of moles of gas?

  • Shifts to the left
  • Shifts to the right (correct)
  • Becomes unpredictable
  • No change

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Study Notes

Equilibrium State

  • The state in which the rates of the forward and reverse reactions are equal is called equilibrium.

Factors Affecting Equilibrium

  • The position of equilibrium in a chemical reaction is not affected by the concentration of reactants or products.

Effect of Pressure on Equilibrium

  • When the pressure is increased in a reaction involving a decrease in the number of moles of gas, the equilibrium position shifts to the left (towards the reactants).

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