What is the order of SN2 reactions?
Correct answer: C. 2nd order
- A. 1st order
- B. zero order
- C. 2nd order
- D. 3rd order
Explanation
Option C is correct since the SN2( nucleophilic substitution) reaction follows second-order kinetics; that is, the rate of the reaction depends on the concentration of two first-order reactants. In the case of bimolecular nucleophilic substitution, these two reactants are the haloalkane and the nucleophile.
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About Alkyl Halides
Alkyl halides are named and related to their carbon-halogen structure, polarity and reactivity. The key reactions are nucleophilic substitution by SN1 and SN2 mechanisms and elimination by E1 and E2 mechanisms, including how substrate structure, nucleophile, base, solvent and temperature influence substitution versus elimination.
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