How does fractional distellation differ from distellation?
Fractional Distellation differs from Distellation only in that it seperates a mixture into a number of different parts (fractions)
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How does fractional distellation work?
Because they have different boiling points, the substances in crude oil can be separated using fractional distillation. The crude oil is evaporated and its vapours allowed to condense at different temperatures in the fractionating column. Each fracti
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What is the temperature at the top of the fractional disteller?
Cool (25oc)
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What is the temperature at the bottom of the fractional disteller?
Hot (350oc)
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What are some properties of the large molecules
Further down the disteller, high boiling points, not very volatile, dont flow easily, dont ignite easily
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What are some properties of the small molecules
Found in top of disteller, low boiling points, volatile, flows easily, ignites easily,
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What are the different fractions and their uses (top to bottom)
Gasoline (fuel for cars) -> Naptha (Making Chemicals) -> Kerosene (Air Craft Fuel) -> Diesel Oil (Fuel for cars, lorries, buses) -> Fuel Oil (Fuel for ships, power stations) -> Bitumen (roads and roofs)
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Where do the fractions come out.
The fractions come out of the side going down from cool to hot temperature and bitumen comes out of the very bottom
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Other cards in this set
Card 2
Front
How does fractional distellation work?
Back
Because they have different boiling points, the substances in crude oil can be separated using fractional distillation. The crude oil is evaporated and its vapours allowed to condense at different temperatures in the fractionating column. Each fracti
Card 3
Front
What is the temperature at the top of the fractional disteller?
Back
Card 4
Front
What is the temperature at the bottom of the fractional disteller?
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