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.
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 B: they have the same empirical formula. In a homologous series, compounds share similar chemical properties and usually have the same general formula, but their empirical formulas may vary.
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 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.
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 gases such as carbon dioxide (CO2) and water vapor (H2O). These gases contribute to the greenhouse effect in the following ways:
CO2 Emission: Carbon dioxide is one of the primary greenhouse gases. It absorbs and re-emits infrared radiation, trapping heat in the atmosphere.
Water Vapor Contribution: Water vapor is also a greenhouse gas. Higher temperatures from global warming increase evaporation, which increases water vapor levels and further enhances the greenhouse effect.
Overall Impact: Together, these gases lead to an increase in global temperatures, resulting in climate change.
