Fractional Distilation.

Question 1

In order for hydrocarbons in crude oil to be useful what do we do?

Answer 1

• We have to serperate the hydrocarbons in crude oil for them to be useful.
• Fractional Distilation.
• Crude oil is separated into fractions.
• Fractions contain hydrocarbons with similar number of carbon atoms.

Question 2

How does fractional distillation work?

Answer 2

• Heat the crude oil into a gas.
• Pass the gas into a fractional column which is hotter at the bottom and cooler at the top.
• Hot gases rise up the column and when they reach a region that has a lower temperature than boiling point they condense into a liquid.
• Hydrocarbons Longest chains= Highest boiling points so quickly condense into a liquid and drain into the column early on. (HEAVY FUEL OIL).
• Hydrocarbons with shorter chains= Have lower boiling points so stays as a gas longer as they rise the column and reach a temperature to condense. (Petrol and desieil).
• Shortest Hydrocarbons= Such low boiling points that they stay as a gas the entire time.

Question 3

What can long-chain hydrocarbons be used for?

Answer 3

• Petrochemicals; Used as feedstock and raw material.

- Made to made Sovents, Polymers, Lubricants and Detergents.

Question 4

What