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A car engine burns fuel with insufficient air - HSC - SSCE Chemistry - Question 11 - 2002 - Paper 1
Question 11
A car engine burns fuel with insufficient air. Which substance would be emitted in the exhaust in higher levels than from an engine with a correct fuel to air ratio?... show full transcript
Worked Solution & Example Answer:A car engine burns fuel with insufficient air - HSC - SSCE Chemistry - Question 11 - 2002 - Paper 1
Step 1
Identify the substance emitted in higher levels
Answer
When a car engine burns fuel with insufficient air (a condition known as rich combustion), incomplete combustion occurs. This leads to the production of several byproducts. In such cases, carbon monoxide (CO) is produced in higher quantities compared to a correctly adjusted engine.
Carbon monoxide is a colorless and odorless gas that can be harmful to health. It forms because there is not enough oxygen to convert carbon in the fuel completely into carbon dioxide (CO2). In contrast, when the fuel-air mixture is correct, carbon is primarily converted to carbon dioxide.
Therefore, the correct answer to the question is:
(B) Carbon monoxide