Edexcel IGCSE Chemistry 3.21C catalyst and equilibrium
Practise catalyst-equilibrium questions by separating faster reaction rate from unchanged equilibrium yield in reversible reactions.
- Syllabus
- First assessment 2019
- Course
- Chemistry 4CH1
Exam points
- Predict that a catalyst does not change the equilibrium yield in a reversible reaction.
- Explain that a catalyst speeds up the forward and reverse reactions equally.
3.21C Catalysts and equilibrium position question 1
[Maximum number: 2]
Gaseous ethanol is manufactured by reacting ethene gas with steam.
This is the equation for the reaction.
Predict the effect of adding a catalyst on the yield of ethanol at equilibrium, giving a reason for your answer.
- the yield of ethanol does not change
- a catalyst increases the rate of the forward and backward reactions equally
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