07. Reactions of alkenes 2

What are the reagents and conditions for acid catalysed hydration of ethene?

Steam and phosphoric acid catalyst

What is the mechanism / type of reaction for acid catalysed hydration of ethene?

Electrophilic addition

What is the general equation for acid catalysed hydration of ethene?

C₂H₄ + H₂O -> CH₃CH₂OH

Draw acid catalysed hydration of ethene

Yes

What are the reagents and conditions for addition polymerisation of ethene?

Alkene monomers and a starting catalyst

What is the mechanism / type of reaction for addition polymerisation of ethene?

Addition - Many monomers join together to form single long chain

What is the monomer used in addition polymerisation of ethene?

Unsaturated alkene with a C=C

What happens to alkenes in addition polymerisation?

Double bonds are opened up to give single bonds

What is the product of addition polymerisation?

The polymer

Draw the general formula for addition polymerisation?

Yes

What are the properties of monomers?

Have double bonds within the bracket

What are the properties of polymers?

Single bonds extending through the bracket

What is the difference in physical properties of monomers and polymers?

Monomers = volatile gases, polymers = liquids or solids (More VDW between molecules in polymers)

What are the problems with disposal of plastics?

1) Non biodegradable so fill up land fills for 100s of years 2) combustion of polymers produce toxic fumes like carbon monoxide which are carcinogenic and harm environment