6. Diesel oil is a mixture of hydrocarbons that can be obtained from crude oil - Edexcel - GCSE Chemistry Combined Science - Question 6 - 2021 - Paper 1
Question 6
6. 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:6. Diesel oil is a mixture of hydrocarbons that can be obtained from crude oil - Edexcel - GCSE Chemistry Combined Science - Question 6 - 2021 - Paper 1
Step 1
6(a) 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
6(b) 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, compounds share a common formula pattern, meaning they can typically be represented by a general formula.
Step 3
6(c) Complete the balanced equation for the reaction.
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Answer
The balanced equation for the reaction is:
N2+2O2→2NO2
Step 4
6(d) Explain how the greenhouse effect is caused by the gases produced by the complete combustion of diesel oil.
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Answer
The greenhouse effect occurs when gases such as carbon dioxide and water vapor, released during the complete combustion of diesel oil, trap heat in the atmosphere. This trapping of heat leads to an increase in global temperatures. Additionally, some combustion products release nitrogen oxides, which can contribute to the formation of ozone at ground level, further intensifying the greenhouse effect. As a result, the overall balance of Earth's temperature is disrupted, leading to climate change.
