Cracking Crude Oil Flashcards Preview

Real C1 > Cracking Crude Oil > Flashcards

Flashcards in Cracking Crude Oil Deck (7):
1

What does cracking mean?

means splitting up long-chain hydrocarbons by passing vapour over a hot catalyst

2

What do long-chain hydrocarbons form? Useful?

Form thick, gloopy liquids like tar which aren't very useful

3

What are a lot of the longer molecules produced from fractional distillation done with?

They are turned into smaller molecules by cracking

4

What substances does cracking produce? and what are they used for?

Mostly alkanes
Petrol (Car fuel) and Paraffin (Jet fuel)
Ethene for plastics

5

What kind of reaction is cracking?

Thermal decomposition - breaking molecules down by heating them

6

Describe the process of cracking

1) Heat the long-chain hydrocarbon to vaporise it (turn it into a gas)
2) The vapour is then passed over a powdered catalyst (aluminium oxide) at a temp of 400-700°C
3) The long chain loecules slpit apart on the surface of the specks of catalyst

7

What are unsaturated hydrocarbons?

Alkenes