Which one of the following solvents favours SN2 reactions?
Correct answer: C. Carbon tetrachloride
- A. Water
- B. Ammonia
- C. Carbon tetrachloride
- D. Acetic acid
Explanation
Carbon tetrachloride is a nonpolar solvent. SN2 reactions are favored in nonpolar solvents because these solvents do not solvate ions as strongly, allowing for a more straightforward nucleophilic attack. The lack of polarity in carbon tetrachloride reduces ion-dipole interactions, promoting the SN2 mechanism. Therefore, option c is correct.
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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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