in the organic part on unit5, could some1 explain to me whats meant by SN1 and SN2 reactions??...help!!!
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Unit5 edexcel CHEMISTRY watch
- Thread Starter
- 16-06-2004 15:13
- 16-06-2004 20:48
This is what I posted in a previous post:
A brief description of what i think they are;
SN1 means one reactant appears in the rate equation so the rate depends on the concetration only one reactant.
eg the formation of a carbocation or the formation of an electrophile.
SN2 means two reactants appear in the rate equation so the rate depends on the concentration of two reactants. Meaning a transistion state is formed and that the formation of it is the rate determining step.
I hope that makes sense.
- 16-06-2004 23:40
Sn1 - 1st order nucleophilic substitution (usually tertiary halogenoalkanes)
Sn2 - 2nd order nucleophilic substitution (usually primary halogenoalkanes)