addition reactions of alkenes

Question 1

What is hydrogenation

Answer 1

Adding hydrogen to an alkene to make an alkane

Question 2

What catalyst is used for hydrogenation

Answer 2

nickel

Question 3

What is hydration

Answer 3

Adding water to an alkene to make it an alcohol

Question 4

What catalyst is used for hydration

Answer 4

Concentrated phosphoric acid

Question 5

what happens after the hydration reaction takes place

Answer 5

take out the alcohol from any unreacted water and alkene

Question 6

While making ethanol, how do you remove the ethene

Answer 6

It has a low BP, so cooling it down allows it to keep it as a gas

Question 7

While making ethanol, how do you remove the water?

Answer 7

Fractional distillation makes the ethanol evaporate + codense in a seperate beaker.

Question 8

What is halogenation?

Answer 8

Adding a halogen to an alkene

Question 9

Catalyst used in halogenation

Answer 9

None

Question 10

What is a halogen?

Answer 10

Group 7 on the periodic table

Question 11

What happens to bromine when an alkene (eg. ethene) is added

Answer 11

Bromine bonds with the ethene to form dibromoethane and disappears, going from orange to colourless