Halogenoalkanes Flashcards
(8 cards)
1
Q
Halogenoalkanes from alkanes
A
Radical substitution
2
Q
Halogenoalkanes from alkenes
A
Electrophyllic addition
3
Q
Reactions of halogenoalkanes
A
Elimination
Substitution
4
Q
Reflux reaction uses a..
A
Reflux condenser
5
Q
NaOH(aq) + HNO3(aq) + AgNO3(aq) with chloroalkane, bromoalkane and iodoalkane
A
Chloroalkane = white ppt dissolves in dilute ammonia solution Bromoalkane = cream ppt dissolves in concentrated ammonia solution Iodoalkane = primrose yellow ppt doesn't dissolve in ammonia solution
6
Q
Rate of hydrolysis
A
Iodo>bromo>chloro
As C-Cl is most polar (stronger bonds to break)
7
Q
CFCs were used as propellants, effect on ozone layer
A
C-Cl bonds broken by UV light: Cl•+O3-->ClO•+O2 UV light in upper atmosphere breaks down O2: O2-->2O React with radicals: ClO•+O-->O2+Cl•
8
Q
CFCs replaces with…
A
HCFCs
