Reactions Of Alkenes

Question 1

How do alkenes react

Answer 1

Using addition reactions

Question 2

What is a functional group

Answer 2

A group of atoms in a molecule that determine how that molecule typically reacts

Question 3

What is alkene functional group

Answer 3

C=C

Question 4

What are addition reactions

Answer 4

The carbon double bond will open up to leave a single bond and a new atom is added to each carbon

Question 5

What is the addition of hydrogen known as

Answer 5

Hydrogenation

Question 6

When is hydrogen reacted with an alkene

Answer 6

In the presence of a catalyst

Question 7

What does steam react with alkenes to form

Answer 7

Alcohols

Question 8

What happens when alkenes react with steam

Answer 8

Water is added across the double bond and alcohol is formed

Question 9

How can Ethene be made into ethanol

Answer 9

Steam and then passing it over a catalyst

Question 10

What happens after the reaction is taking place

Answer 10

Reaction mixture is passed from the reactor to the condenser ethanol and water have a higher boiling point than even so condense was any unreacted Ethan gas is recycle back to the reactor

Question 11

What can alcohol be purified from a mixture by

Answer 11

Fractional distillation

Question 12

What do alkanes also react with

Answer 12

Halogens

Question 13

Bromine and Ethene react to form

Answer 13

Dibromoethane

Question 14

What can the addition of bromine to a double bond test for

Answer 14

Alkenes

Question 15

What happens when orange bromine water is added to a saturated compound like an alkane

Answer 15

No reaction will happen and it will stay bright orange

Question 16

What happens with orange bromine water is added to an alkene

Answer 16

The bromine will add across the double bond making a colourless dibromo compound