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During fractional distillation, crude oil is separated into a number of fractions - Edexcel - GCSE Chemistry - Question 3 - 2012 - Paper 1
Question 3
During fractional distillation, crude oil is separated into a number of fractions. The table shows the relative amount of these fractions that can be obtained from ... show full transcript
Worked Solution & Example Answer:During fractional distillation, crude oil is separated into a number of fractions - Edexcel - GCSE Chemistry - Question 3 - 2012 - Paper 1
Step 1
For which fractions does the demand exceed the supply?
Answer
To determine which fractions have a demand that exceeds their supply, we need to compare the 'relative amount obtained' with the 'relative demand' from the table:
- LPG: Amount = 2, Demand = 6 (Demand > Supply)
- Petrol: Amount = 12, Demand = 29 (Demand > Supply)
- Kerosene: Amount = 16, Demand = 11 (Supply > Demand)
- Diesel: Amount = 24, Demand = 29 (Demand > Supply)
- Fuel Oil and Bitumen: Amount = 46, Demand = 25 (Supply > Demand)
Thus, the fractions where demand exceeds the amount obtained are LPG, petrol, and diesel.