Industrial Processes

Question 1

Cracking

Answer 1

Turns low demand long chain hydrocarbons into high demand short chain hydrocarbons

Question 2

Why is cracking used?

Answer 2

1: long chain hydrocarbons have high boiling points
2: short chain hydrocarbons have lower boiling points
3: High demand for short chain hydrocarbons
4: to meet this demand long chain hydrocarbons are split in to short chain hydrocarbons

Question 3

Cracking is a form of ……..

Answer 3

Thermal decomposition

• breaking molecules down into simpler ones by heating them

Question 4

What are the conditions and what catalyst is used in cracking?

Answer 4

600-700*c

Silica

Question 5

Describe the process of cracking

Answer 5

1: heat the paraffin
2: move Bunsen burner to heat silica
3: heated paraffin vapour cracks as it passes over heated catalyst
4: small alkenes collect at the end of the boiling tube
5: the alkenes are collected through water using a gas jar

Question 6

Addition Polymerisation

Answer 6

The monomers that make up addition polymerisation have carbon-carbon double bond. Alkenes