Modern cars are fitted with catalytic converters to reduce atmospheric pollution caused by unwanted reactions during the combustion of the fuel. Which statements are correct? 1 Carbon monoxide is oxidised to carbon dioxide in a catalytic converter. 2 Catalytic converters have a very large surface area. 3 Nitrogen dioxide is reduced to nitrogen monoxide in a catalytic converter.

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Modern cars are fitted with catalytic converters to reduce atmospheric pollution caused by unwanted reactions during the combustion of the fuel - CIE - A-Level Chemistry - Question 36 - 2017 - Paper 1

Question 36

Modern cars are fitted with catalytic converters to reduce atmospheric pollution caused by unwanted reactions during the combustion of the fuel. Which statements ar... show full transcript

Worked Solution & Example Answer:Modern cars are fitted with catalytic converters to reduce atmospheric pollution caused by unwanted reactions during the combustion of the fuel - CIE - A-Level Chemistry - Question 36 - 2017 - Paper 1

Step 1

1 Carbon monoxide is oxidised to carbon dioxide in a catalytic converter.

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Answer

This statement is correct. In a catalytic converter, carbon monoxide (CO) is indeed oxidized to form carbon dioxide (CO₂). This reaction helps to reduce toxic emissions from vehicles.

Step 2

2 Catalytic converters have a very large surface area.

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Answer

This statement is also correct. Catalytic converters are designed with a large surface area to maximize the contact between exhaust gases and the catalyst, which enhances the efficiency of the catalytic reactions.

Step 3

3 Nitrogen dioxide is reduced to nitrogen monoxide in a catalytic converter.

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Answer

This statement is incorrect. In a catalytic converter, nitrogen oxides (NOₓ) are typically reduced to nitrogen (N₂) rather than nitrogen monoxide (NO). Thus, nitrogen dioxide (NO₂) is not reduced specifically to nitrogen monoxide.

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Modern cars are fitted with catalytic converters to reduce atmospheric pollution caused by unwanted reactions during the combustion of the fuel - CIE - A-Level Chemistry - Question 36 - 2017 - Paper 1

Worked Solution & Example Answer:Modern cars are fitted with catalytic converters to reduce atmospheric pollution caused by unwanted reactions during the combustion of the fuel - CIE - A-Level Chemistry - Question 36 - 2017 - Paper 1

1 Carbon monoxide is oxidised to carbon dioxide in a catalytic converter.

2 Catalytic converters have a very large surface area.

3 Nitrogen dioxide is reduced to nitrogen monoxide in a catalytic converter.

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