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
State the name of the process used to separate diesel oil from crude oil.
96%
114 rated
Only available for registered users.
Sign up now to view full answer, or log in if you already have an account!
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?
99%
104 rated
Only available for registered users.
Sign up now to view full answer, or log in if you already have an account!
Answer
The correct statement is C: they have the same general formula. In an homologous series like alkanes, each successive compound differs by a CH₂ unit and shares the same general formula, CnH2n+2.
Step 3
Complete the balanced equation for the reaction.
96%
101 rated
Only available for registered users.
Sign up now to view full answer, or log in if you already have an account!
Answer
The completed balanced equation is:
ightarrow 2NO_2$$
Step 4
Explain how the greenhouse effect is caused by the gases produced by the complete combustion of diesel oil.
98%
120 rated
Only available for registered users.
Sign up now to view full answer, or log in if you already have an account!
Answer
The complete combustion of diesel oil produces carbon dioxide (CO₂) and water vapor (H₂O) as byproducts.
Carbon dioxide is a greenhouse gas that traps heat in the atmosphere, contributing to the greenhouse effect.
When fossil fuels are burned, CO₂ levels in the atmosphere increase, enhancing the greenhouse effect, leading to global warming and climate change.
Additionally, other pollutants such as nitrogen oxides (NOx) can contribute to air quality issues and further exacerbate climate change effects.
