Question
Write down the difference between SN1 and SN2 reaction.
✓
Answer
| SN2 Reaction | SN1 Reaction |
| → SN2 reaction means it is bimolecular nucleophilic substitution reaction. | → SN1 reaction means it is unimolecular nucleophilic substitution reaction. |
| → The rate of SN2 reaction depends on the concentration of Substrate and Nucleophiles both. Rate = K [S]1. [Nu]1 | →The rate of SN1 reaction depends on the concentration of Substrate on Rate = K [S]1 |
| → SN2 reaction follow second order kinetics. | → SN1 reaction follows first order kinetics. |
→ The reaction of chloromethane and hydroxide ion gives methanol and chloride ion is example of SN2 reaction | →The reaction of tert-butyl bromide with hydroxide ion gives tert-butyl alcohol is example of SN1 reaction. |
| → SN2 reaction complete in a single step without formation of an intermediate | → SN1 reaction complete in twosteps. Step 1: Formation of carbocation by cleavage of CX in haloalkane Step 2: Attack of nucleophiles on carbocation to form product. |
 |  |
| → SN2 reaction shows inversion of configuration. | → SN1 reaction shows reacemic mixture. |
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