Haloalkanes gap Flashcards
1
Q
how is ozone in the stratosphere maintained?
A
O3 to O2 + O
and
O +O2 to O3 reactions are in equilibrium.
rate of formation of ozone the same as rate of destruction of Ozone.
2
Q
What does Ozone do
A
prevent UV from reaching earth.
3
Q
Biodegradable propellants now used…
A
hydro difloro chloro carbon
4
Q
NO and ozone reactions
A
NO• + O3 —> NO2• + O2
NO2• + O —> NO• + O2
5
Q
Properties if CFCs
A
- non- toxic
- volatile
6
Q
what can the halogen be substitued with in nucleophilic substitution?
A
nucleophiles like OH ions, water molecules and ammonia molecules.
7
Q
name given for the substitution of halogen with nucleophile.
A
hydrolysis
8
Q
why are tertiary haloalkanes hydrolysed faster?
A
- the reaction of tertiary haloalkanes via hydrolysis is a two-step process.
- this reaction mechanism (reaction route) requires a lower activation energy.
9
Q
Chlorine radical and ozone
A
•Cl + O3 > •ClO + O2
•ClO + O3 > Cl + 2O2
