PL Questions

Question 1

What do curly arrows show ?

Answer 1

The movement of electrons

Question 2

Give an example of electrophilic addition

Answer 2

When hydrogen chloride adds to ethene to make chloroethane

Question 3

Define electrophile

Answer 3

Attracts a lone pair of electrons in a covalent bond

Question 4

Define nucleophile

Answer 4

Donates a lone pair of electrons

Question 5

Outline the mechanism for the reaction between Ethene and HBr

Answer 5

In an electrophilic reaction, the double bond breaks and a hydrogen atom ends up attached to one of the carbons and a bromine atom to the other, to form bromoethane

Question 6

Outline the mechanism between Ethene and Br2

Answer 6

In an electrophilic reaction, one of the bromine atoms receives a partial positive charge. The bromine atom that attacks the double bond in ethene causing it to break and a bromine attaches to one carbon and bromine atom to the other, to form dibromoethane.

Question 7

Outline the mechanism for the reaction between ethene and H2

Question 8

Outline the mechanism for the reaction between But-1-ene and HBr

Question 9

Outline the mechanism for the reaction between ethene and H2O

Question 10

Give an example of nucleophilic substitution

Question 11

Draw a mechanism for the reaction between 1 bromopropane and LiOH

Question 12

Outline the mechanism for the homolytic fission reaction between methane and bromine