6.2.6 - Addition reactions of alkenes

Question 1

What happens to the structure of an alkene when they react?

Answer 1

Double bond becomes a single bond
Pi bond electrons used to form bonds with attacking molecules
Saturated product

Question 2

What’s formed when ethene undergoes hydrogenation?

Answer 2

Ethane

Question 3

What are the conditions required for hydrogenation to occur?

Answer 3

Nickel catalyst
150 degrees

Question 4

What is formed when ethene reacts with bromine?

Answer 4

Dibromoethane

Question 5

What conditions are needed for halogentaion to occur?

Answer 5

Room temperature

Question 6

What’s is formed when ethene reacts with hydrogen bromide?

Answer 6

Bromoethane

Question 7

Conditions needed for an alkene to react with a hydrogen halide?

Answer 7

Room temperature

Question 8

What is formed when ethene reacts with steam?

Answer 8

Ethanol

Question 9

What conditions are required for hydration to occur?

Answer 9

300 degrees
60 atm
Phosphoric acid catalyst

Question 10

What does dilute potassium manganate form when reacted with ethene?

Answer 10

A diol