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Explain how altering conditions can influence the direction of a reversible reaction, specifically regarding: (a) the impact of heat on hydrated substances (b) the effect of adding water to anhydrous substances, limited to copper(II) sulfate and cobalt(II) chloride.

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Cambridge IGCSE ChemistryChemical reactionsCore content

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Quick explanation

Explain how altering conditions can influence the direction of a reversible reaction, specifically regarding: (a) the impact of heat on hydrated substances (b) the effect of adding water to anhydrous substances, limited to copper(II) sulfate and cobalt(II) chloride

  • This point belongs to Reversible reactions and equilibrium, especially Reversible reactions and equilibrium outcomes.
  • You need to be able to explain how altering conditions can influence the direction of a reversible reaction, specifically regarding: (a) the impact of heat on hydrated substances (b) the effect of adding water to anhydrous substances, limited to copper(II) sulfate and cobalt(II) chloride.
  • The key ideas to know are Describe.
  • Use the linked flashcards and practice questions to check recall, then practise applying the idea in an exam-style answer.

Key concepts

Describe

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This objective helps connect Reversible reactions and equilibrium outcomes to exam-style questions, flashcards, and revision notes for Reversible reactions and equilibrium.

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Paper 3 structured question: Reversible reactions and equilibrium

Paper 3Theory (Core)1 marks

Description

Effects of Temperature and Water on Copper(II) Sulfate

Copper(II) sulfate can exist in a hydrated form (CuSO4·5H2O) and an anhydrous form (CuSO4). Heating the hydrated form leads to dehydration, while adding water to the anhydrous form leads to hydration.

  1. a

    State the effect of heating on hydrated copper(II) sulfate.

    Aim for approximately 1 distinct marking point.

    [1]
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