Catalysts (OCR A-Level Chemistry A): Quizzes
📚Quizzes
Practise the questions
10 questions from this quiz
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Practise the questions
10 questions from this quiz
What happens to a catalyst during a chemical reaction?
What happens to a catalyst during a chemical reaction?
It remains unchanged and is regenerated
How do catalysts increase the rate of a chemical reaction?
How do catalysts increase the rate of a chemical reaction?
By lowering the activation energy
What effect does a catalyst have on the enthalpy change () of a reaction?
What effect does a catalyst have on the enthalpy change () of a reaction?
It has no effect on
What defines a homogeneous catalyst?
What defines a homogeneous catalyst?
Same physical state as reactants
What is the first step in heterogeneous catalysis?
What is the first step in heterogeneous catalysis?
Adsorption onto catalyst surface
Which catalyst is used in the Haber process for ammonia production?
Which catalyst is used in the Haber process for ammonia production?
Iron, Fe(s)
What does a catalytic converter convert carbon monoxide (CO) into?
What does a catalytic converter convert carbon monoxide (CO) into?
Carbon dioxide ()
Why do catalysts reduce operating costs in industrial processes?
Why do catalysts reduce operating costs in industrial processes?
They lower the required temperature
What is autocatalysis?
What is autocatalysis?
When a product catalyzes the reaction
Approximately what percentage of chemical materials are manufactured using catalysts?
Approximately what percentage of chemical materials are manufactured using catalysts?
90%