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) D... 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 answer is C: They have the same general formula. In an homologous series, all compounds share a common general formula, typically represented as CnH2n+2 for alkanes.
Step 3
Complete the balanced equation for the reaction.
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Answer
The balanced equation for the reaction is:
N2+2O2→2NO2
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 greenhouse gases, primarily carbon dioxide (CO₂) and water vapor (H₂O). These gases trap heat in the atmosphere, leading to an increase in global temperatures.
Moreover, nitrogen oxides (NOx) are also produced, which can contribute to ozone formation in the lower atmosphere. The accumulation of these gases enhances the greenhouse effect, resulting in climate change and various environmental impacts.
