Alkenes

Question 1

What is the reaction when hydrogen is reacted with cyclopentene?

Answer 1

Hydrogenation

Question 2

What are the reagents and conditions needed for cyclopentene to make the cyclopentanol?

Answer 2

Steam and an acid catalyst is needed

Question 3

What are the bond angles in an alkene and why?

Answer 3

It is 120 as there are three regions of electron density around the carbon atoms. These three regions repel one another as far away as possible which then creates a bong angle of 120.

Question 4

What are the advantages and disadvantages of the combustion of polymers?

Answer 4

The polymers are not sent to landfill sites where they will take a long period time to decompose. However, hazardous gases are released into the atmosphere.

Question 5

What is the product (waster gas) when you burn PVC?

Answer 5

Hydrochloric acid

Question 6

Give a type of degradeable polymer and state what makes these polymers break down.

Answer 6

Photodegradeable polymers will break down in the presence of UV light. This is because the bond breaks in UV light.

Question 7

What does carbon neutral mean?

Answer 7

It does not produce any less or more carbon than it is taken in.

Question 8

What makes a reaction heterolytic?

Answer 8

The curly arrow shows the movement of a pair of electrons, so bond breaks down when both electrons move to one of the bonded atoms.