Halogenoalkanes

Question 1

What are haloalkanes?

Answer 1

They are saturated compounds that contain carbon atom(s) and at least one halogen atom

Question 2

How do we classify haloalkanes

Answer 2

This is done according to the number of alkyl groups attached to the c atom bonded to the halogen atom

There are :
primary haloalkanes : one alkyl group
Secondary haloalkanes : two alkyl groups
Tertiary haloalkanes : 3 alkyl groups

Question 3

What is the shortened formula of a primary haloalkane ?

Answer 3

RX

Question 4

What is the shortened formula of a secondary haloalkane?

Answer 4

R2CHX

Question 5

What is the shortened formula for tertiary haloalkanes?

Answer 5

R3CX

Question 6

What are some examples of primary,secondary and tertiary haloalkanes?

Answer 6

Primary : chloroethane
Secondary: 2bromopropane
Tertiary : 2iodo2methyl propane

Question 7

What is the difference in electro negativity between carbon and the halogens

Answer 7

As the difference in electro negativity is significant , the C-X bond is polar so the electrons in the covalent bond are held closer to the halogen atom (and the bond is polar )

Question 8

State whether or not the following haloalkanes are primary or secondary :
Chloroethane
2-bromo-2-methyl butane
3-chloro-2-ethyl hexane

Answer 8

Chloroethane : primary
2-bromo-2-methyl butane: tertiary
3-chloro-2-ethyl hexane :secondary