Halogenoalkanes Revision

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  • Created on: 28-02-16 20:03
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General formula = C
X is a halogen, it's slightly ­ve.
Halogenoalkanes are polar.
The curly arrow shows the movement of the free pair of electrons.
Nucleophile ­ electron donor pair
It replaces X.
:OH = Hydroxide ion and it makes an alcohol
:NH3 = Ammonia and it makes amine
:CN = Cyanide ion and it produces a nitrile
Tertiary halogenoalkanes are more likely to take part in nucleophilic

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Elimination Reaction ­
Potassium Hydroxide (alcoholic) + Halogenoalkane Alkane + H2O
KOH acts as a base.
Tertiary halogenoalkanes tend towards elimination.
Free radical substitution ­
Free radical ­ atom either on its own or part of a molecule which has free
electrons ready to form a covalent bond.…read more

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