Reactions of Alkenes

Question 1

What can alkenes be used for similar to small alkanes

Answer 1

combustion

Question 2

what happens to alkenes during complete combustion

Answer 2

reacts with oxygen to form CO2 and H2O

Question 3

what happens to alkenes during incomplete combustion

Answer 3

same as alkanes react with limited oxygen to form C,CO and H2O

Question 4

What 3 addition reactions do we need to know

Answer 4

Addition of hydrogen
Addition of H2O
Addition of halogens

Question 5

What happens in the addition reaction of hydrogen and alkEne(ethene) + What CONDITIONS

Answer 5

Alkene + H2 —> alkane
nickel catalyst
150C

Question 6

what happens in the addition reaction of water and alkEne (ethene) + What CONDITIONS

Answer 6

Alkene + steam —-> alcohol
high temp
conc. phosphoric acid

Question 7

what happens in the addition reaction of a halogen and alkENe (ethene) + what CONDITIONS

Answer 7

Alkene + halogen molecule –> halogeno alkane