haloalkanes

Question 1

what are haloalkanes

Answer 1

halogen that takes place of a h atom in an alkane

Question 2

what is a free radical

Answer 2

a reactive species which possess as unpaired electron

Question 3

what is free-radical substitution reaction

Answer 3

• initiation
• propagation
• termination

Question 4

what do u do in initiation step

Answer 4

break the halogen bond using an UV light to produce 2 radicals in a homolytic fission reaction

Question 5

what do u do in the propagation step

Answer 5

the progression of a substitution reaction

Question 6

termination

Answer 6

when the chain terminates due to 2 free radicals reacting together and forming a single unreactive molecule

Question 7

nucleophile

Question 8

why is ultraviolet needed

Answer 8

provides energy to break (covalent) bond in chlorine

Question 9

1,1,2-trichloro-1,2,2-trifluoroethane is banned for damaging the ozone layer.

3 equations to show how it’s involved in damaging the ozone layer

Answer 9

INITIATION CCL2FCCLF2 -> Cl* + CCl2FCF2

Cl* + O3 -> ClO* + O2

ClO + O3 -> Cl* + 2O2