Electrophilic Addition Reactions

Question 1

Define electrophile

Answer 1

Electron pair acceptot

Question 2

What is electrophilic addition?

Answer 2

When an alkene has been turned into something else

Reaction in which an electrophilic species combines with an alkene by breaking double bond and forming new bonds

Question 3

Describe what is electrophilic addition with halogens

Answer 3

• this is the reaction used to test for presence of alkenes
• bromine water decolourises when added to an alkene
• this is because Br2 undergoes electrophilic addition across double bond and orange aqueous Br2 is used up

Question 4

Describe electrophilic additions with sulfuric acid, why can it act as an electrophile?

Answer 4

• sulfuric acid can act as an electrophile
• just like hydrogen halides and halogen molecules
• as they all have a delta positive charge within molecule which is attacked by double bond

Question 5

Are alkenes good with reacting with electron pair acceptors and why?

Answer 5

Alkenes contain a double bond so are good with reacting with electron pair acceptors