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Edexcel A-Level Chemistry A2 17.29 How a Catalytic Converter Decreases Carbon Monoxide and Nitrogen Monoxide Emissions From Internal Combustion Engines By I Questions

Describe the heterogeneous sequence clearly: CO or NO adsorbs on platinum, bonds weaken, reaction occurs on the surface, then CO2 or N2 desorbs.

Syllabus
First assessment 2019
Course
Chemistry YCH11
Level
A2

Exam points

  • Describe CO or NO adsorption onto the platinum catalyst surface in the converter.
  • Explain bond weakening, surface reaction and desorption of CO2 or N2 products.
  • Compare platinum converter catalysis with V2O5 catalyst cycling when prompted.

Edexcel A-Level Chemistry A2 17.29 How a Catalytic Converter Decreases Carbon Monoxide and Nitrogen Monoxide Emissions From Internal Combustion Engines By I Questions question 1

[Maximum number: 1]

Which of the following is not true of the reactions occurring in the catalytic converter fitted to a car exhaust?

A

they involve heterogeneous catalysis

B

carbon monoxide is adsorbed onto the surface of the catalyst

C

nitrogen is desorbed from the surface of the catalyst

D

the products cause no harm to the environment

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