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Which statement about the fractional distillation of crude oil is correct? A Diesel leaves the fractionating column at the bottom - OCR Gateway - GCSE Chemistry: Combined Science - Question 5 - 2018 - Paper 1
Question 5
Which statement about the fractional distillation of crude oil is correct? A Diesel leaves the fractionating column at the bottom. B Petrol leaves the fractionat... show full transcript
Worked Solution & Example Answer:Which statement about the fractional distillation of crude oil is correct? A Diesel leaves the fractionating column at the bottom - OCR Gateway - GCSE Chemistry: Combined Science - Question 5 - 2018 - Paper 1
Step 1
D The hydrocarbons in crude oil can be separated because they have different boiling temperatures.
Answer
In fractional distillation, the separation of hydrocarbons occurs due to their varying boiling points. As the mixture is heated, different fractions vaporize at different temperatures, allowing for their collection at various heights in the fractionating column. This is the correct statement regarding the method of separation in fractional distillation.