In many developing countries, charcoal-burning stoves are used indoors for cooking. Deaths from carbon monoxide poisoning are common in poorly ventilated rooms. Which statement best explains why carbon monoxide is produced in these conditions?

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Question

In many developing countries, charcoal-burning stoves are used indoors for cooking. Deaths from carbon monoxide poisoning are common in poorly ventilated rooms. Which statement best explains why carbon monoxide is produced in these conditions?

Accepted Answer

There is insufficient oxygen for complete combustion — Award 1 mark for recognizing that insufficient oxygen (limited air supply) causes incomplete combustion, producing carbon monoxide instead of carbon dioxide. A is incorrect — temperature does not determine CO production; oxygen availability does. C is incorrect — water vapour does not react with CO₂ to form CO. D is incorrect — CO is produced from incomplete combustion of pure carbon, not from impurities.

Answer

Carbon burns at too high a temperature

Answer

There is insufficient oxygen for complete combustion

Answer

Water vapour from cooking reacts with carbon dioxide

Answer

Charcoal contains impurities that release carbon monoxide

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