9. Diesel oil is a mixture of hydrocarbons that can be obtained from crude oil - Edexcel - GCSE Chemistry - Question 9 - 2021 - Paper 1
Question 9
9. 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)... show full transcript
Worked Solution & Example Answer:9. Diesel oil is a mixture of hydrocarbons that can be obtained from crude oil - Edexcel - GCSE Chemistry - Question 9 - 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 or fractionation.
Step 2
Which statement about compounds in this homologous series is true?
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Answer
The correct statement is C: they have the same general formula.
In an homologous series, all compounds share a consistent structural relation, typically differing by a single -CH₂- unit.
Step 3
Complete the balanced equation for the reaction.
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Answer
The balanced equation for the reaction is:
ightarrow 2NO_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 carbon dioxide (CO₂) and water (H₂O), among other gases.
Carbon Dioxide Emission: Carbon dioxide is a significant greenhouse gas that traps heat in the Earth's atmosphere, leading to an increase in global temperatures.
Heat Trapping: As CO₂ accumulates in the atmosphere, it enhances the greenhouse effect by allowing sunlight to enter but preventing some of the heat from escaping back into space.
Long-term Effects: Over time, this contributes to climate change, affecting weather patterns, melting polar ice, and rising sea levels.
