Le-Chatelier's Principle Quiz
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Questions and Answers

When helium gas is added to the vessel at equilibrium, the concentration of SO₃ in the mixture

  • decreases
  • increases (correct)
  • changes unpredictably
  • remains unaltered
  • According to Le-Chatelier's principle, the dissociation of SO₃ when helium gas is added at constant temperature and volume

  • increases (correct)
  • decreases
  • changes unpredictably
  • remains unaltered
  • The addition of helium gas at constant temperature and volume causes the equilibrium position to shift towards

  • the right (correct)
  • an unpredictable shift
  • the left
  • no shift
  • Study Notes

    Le-Chatelier's Principle

    • When helium gas is added to the vessel at equilibrium, the concentration of SO₃ in the mixture decreases.
    • The dissociation of SO₃ is affected by the addition of helium gas at constant temperature and volume.
    • This causes the equilibrium position to shift towards the reactants, favoring the reverse reaction.

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    Description

    Test your understanding of Le-Chatelier's principle with this quiz on the effect of adding helium gas to a vessel containing SO₃, SO₂, and O₂ at equilibrium. See if you can determine how the dissociation of SO₃ is affected when the total pressure increases while temperature and volume remain constant.

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