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Discuss how the rate of gas diffusion is influenced by the relative molecular mass of the gases.

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Cambridge IGCSE ChemistryStates of matterSupplement content

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Discuss how the rate of gas diffusion is influenced by the relative molecular mass of the gases

  • This point belongs to Diffusion, especially Diffusion outcomes.
  • You need to be able to discuss how the rate of gas diffusion is influenced by the relative molecular mass of the gases.
  • The key ideas to know are Describe, Explain, and Discuss.
  • Use the linked flashcards and practice questions to check recall, then practise applying the idea in an exam-style answer.

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DescribeExplainDiscuss

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Paper 4 structured question: Diffusion

Paper 4Theory (Extended)1 marks

Description

Diffusion of Gases

Consider two gases, A and B. Gas A has a molecular mass of 2 g/mol, while gas B has a molecular mass of 32 g/mol. Both gases are at the same temperature and pressure.

  1. a

    State the relationship between molecular mass and the rate of diffusion of gases.

    Aim for approximately 1 distinct marking point.

    [1]
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