2. Diesel oil is a mixture of hydrocarbons that can be obtained from crude oil - Edexcel - GCSE Chemistry Combined Science - Question 2 - 2021 - Paper 1
Question 2
2. Diesel oil is a mixture of hydrocarbons that can be obtained from crude oil.
(a) State the name of the process used to separate diesel oil from crude oil.
(b) D... show full transcript
Worked Solution & Example Answer:2. Diesel oil is a mixture of hydrocarbons that can be obtained from crude oil - Edexcel - GCSE Chemistry Combined Science - Question 2 - 2021 - Paper 1
Step 1
State the name of the process used to separate diesel oil from crude oil.
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Answer
The process used to separate diesel oil from crude oil is called fractional distillation.
Step 2
Which statement about compounds in this homologous series is true?
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Answer
C) they have the same general formula. This is true as alkanes follow a general formula of CₙH₂ₙ₊₂, where n represents the number of carbon atoms.
Step 3
Complete the balanced equation for the reaction.
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Answer
The balanced equation for the reaction is:
ightarrow 2 ext{NO}_2 $$
Step 4
Explain how the greenhouse effect is caused by the gases produced by the complete combustion of diesel oil.
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Answer
The complete combustion of diesel oil produces gases such as carbon dioxide (CO₂) and water vapor (H₂O).
Carbon dioxide is a greenhouse gas that traps heat in the Earth's atmosphere.
As the concentration of CO₂ increases, it enhances the greenhouse effect, leading to global warming. The heat retained in the atmosphere contributes to climate change and alters weather patterns.
