Test for alkanes and Different methods for Cracking Flashcards
1
Q
How is catalytic cracking done?
passed over
A
Heat long chain hydrocarbons to vaporise them
Then the vapour is passed over a hot powdered aluminium oxide catalyst
The longer chain molecules split apart
2
Q
What is thermal decomposition
A
Breaking molecules down by heating them
3
Q
What is steam cracking
A
Vaporise the hydrocarbons
Mix with steam and then heat to a very high temperature
4
Q
How do you test for alkanes
A
Add orange bromine water to a saturated compound like an alkane no reaction will happen and it will stay bright orange
5
Q
What happens when an alkene is completely combusted
A
produces only water and carbon dioxide
