Haloalkanes

Question 1

Why are fluoroalkane un reactive?

Answer 1

due to the high strength of the Carbon - Fluorine
bond.
This is why the surface of some non- stick pans is covered in a fluoroalkane.

Question 2

What are the iodoalkanes the most reactive of the haloalkanes?

Answer 2

because the bond is weak and easily broken.

Question 3

What can haloalkanes be classified as?

Answer 3

primary, secondary or tertiary.

Question 4

What are primary haloalkanes?

Answer 4

The -halo group is attached to a carbon atom with at least two H atoms attached.

Question 5

What are secondary haloalkanes?

Answer 5

The -halo group is attached to a carbon
atom with only one H atom attached.

Question 6

What are tertiary haloalkanes?

Answer 6

The -halo group is attached to a carbon atom with no H atoms attached.

Question 7

What are the physical properties of haloalkanes?

Answer 7

halogen has a higher electronegativity than the carbon to which it is
attached. The presence of the polar bond and the slight charges on both the
carbon and the halogen results in increased intermolecular forces between
molecules. It is these permanent dipole-dipole forces which must be overcome in order to melt or boil a sample. There is therefore an increase in boiling points,
melting points and density in comparison to the corresponding alkanes. Because the haloalkanes do not possess hydrogen bonding, they are often insoluble in water, although haloalkanes are more soluble in water than the corresponding alkanes and the alkenes.