alkenes

Question 1

What are alkenes

Answer 1

Unsaturated hydrocarbons

Question 2

Describe the major and minor products within alkenes

Answer 2

• The major product is formed via a more stable carbocation

•The more alkyl groups present, the more electron density can be distributed to the +ve C and the more stable intermediate it is = positive inductive effect.

Question 3

What is the electron density and reactivity in an alkene

Answer 3

π Pi bonds are due to overlap of p orbital electrons and are electron rich therefore are susceptible to attack from positive species such as electrophiles

Question 4

What are the essential conditions for Direct industrial hydration of alkenes to form alcohols:

Answer 4

Essential Conditions
High temperature 300 to 600°C
High pressure 70 atm
Catalyst of concentrated HyPO

Question 5

What is the general formulae for alkenes

Answer 5

CnH2n

Question 6

What is a positive inductive effect

Answer 6

The ability to release electron density through a covalent bond

Question 7

Define an addition polymer

Answer 7

An addition polymer is a long chain formed from many monomers and no other product is formed

Question 8

What is a use of polymers

Answer 8

Plasticisers-> for example PVC is rigid enough to make into drain pipes, but with the use of plasticisers can become flexible enough to make into aprons