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CAIE IGCSE Chemistry Catalysts Lower Activation Energy

Practise stating that a catalyst provides a lower-activation-energy pathway and showing the lower peak without changing reactant or product energy levels.

Syllabus
2026–2028
Course
Chemistry 0620

Exam points

  • state that a catalyst provides an alternative pathway with lower activation energy
  • draw a lower pathway peak while keeping reactant and product energy levels unchanged

6.2.7—Catalyst decreases the activation question 1

[Maximum number: 1]

The reaction between zinc and dilute sulfuric acid can be catalysed by the addition of aqueous copper(II) sulfate.

On the diagram, add the energy profile for the catalysed reaction.

Figure for Question 6.2.7—Catalyst decreases the activation question 1 — CAIE IGCSE Chemistry
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