Gases, petrol, kerosene, diesel oil, fuel oil and bitumen are the fractions obtained from crude oil by fractional distillation - Edexcel - GCSE Chemistry - Question 3 - 2013 - Paper 1
Question 3
Gases, petrol, kerosene, diesel oil, fuel oil and bitumen are the fractions obtained from crude oil by fractional distillation.
(i) This fraction is more difficult ... show full transcript
Worked Solution & Example Answer:Gases, petrol, kerosene, diesel oil, fuel oil and bitumen are the fractions obtained from crude oil by fractional distillation - Edexcel - GCSE Chemistry - Question 3 - 2013 - Paper 1
Step 1
(i) This fraction is more difficult to ignite than most other fractions and is used as a fuel in large ships.
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Answer
The name of the fraction is fuel oil.
Step 2
(ii) This fraction is obtained from the top of the fractionating column.
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Answer
The name of the fraction is gases.
Step 3
(iii) This fraction has a higher boiling point than kerosene and is used as a fuel for some cars.
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Answer
The name of the fraction is diesel oil.
Step 4
Which of these cannot be a product of burning hydrocarbon fuels?
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Answer
C (hydrogen)
Step 5
(i) Balance this equation for the incomplete combustion of methane by putting numbers in the spaces provided.
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Answer
2CH₄ + 3 O₂ → 2CO + 4 H₂O
Step 6
(ii) Carbon monoxide is a toxic gas and can cause death.
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Answer
Carbon monoxide can cause death by combining with hemoglobin in red blood cells to form carboxyhemoglobin, which reduces the amount of oxygen that can be carried in the blood. This leads to a lack of oxygen for vital organs, resulting in suffocation.
Step 7
Explain a problem caused by growing plants to produce biofuels.
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Answer
Growing plants for biofuels can lead to less food being produced as land and resources are diverted for fuel crops. This can result in increased food prices and potential shortages, causing poverty and starvation.
