CAIE IGCSE Chemistry 10.3.8 How Oxides of Nitrogen Form in Car Questions

Work through real CAIE IGCSE Chemistry questions to explain high-temperature NOx formation and catalytic-converter reactions with carbon monoxide.

Exam points

explain that nitrogen and oxygen from air react at high engine temperatures
identify the catalytic converter as the exhaust equipment that removes NOx
write or choose equations reducing NO or NO2 to N2 while CO forms CO2

[Maximum number: 1]

Oxides of nitrogen are produced by car engines.
In a catalytic converter oxides of nitrogen are removed by reacting them with compound X .

Which row describes the type of reaction oxides of nitrogen undergo and identifies compound X ?

type of reaction

compound X

oxidation

carbon dioxide

oxidation

carbon monoxide

reduction

carbon dioxide

reduction

carbon monoxide

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CAIE IGCSE Chemistry 10.3.8 How Oxides of Nitrogen Form in Car Questions question 1