Halogenoalkanes

Question 1

Halogenoalkanes reactivity?

Answer 1

Much more reactive than alkanes

Question 2

Halogenoalkanes intermolecular forces?

Answer 2

Permanent dipole-dipole and VDW’s

Question 3

Halogenoalkanes Solubility?

Answer 3

Insoluble as C-H is non polar and C-X is not polar enough to make them soluble

Question 4

Halogenoalkane uses?

Answer 4

Refrigerants, Solvents and in pharmaceuticals

Restricted due to negatives of CFS’s

Question 5

Halogenoalkane’s Nucleophiles

Answer 5

Nucleophiles =
OH-, CN-, NH3

Question 6

Halogenoalkane’s factors affecting rate of reaction

Answer 6

Bond polarity: The halogens are more electronegative than carbon so the more electronegative the halogen is, the greater the bond polarity

Bond enthalpy: C-F has a very strong bond so requires much more energy to break than the C-I Bond

Bond enthalpy is more important

Question 7

Ozone

Answer 7

formed naturally in the upper atmosphere, is beneficial because it absorbs ultraviolet radiation.

Question 8

Free radical substitution general formula

Answer 8

X@ + CH4 —> HX + @CH3
X2 + @CH3 —> X@ + CH3X