Question detail
In which condition is elimination favored over substitution in halogenoalkanes?
Try the question, check the answer, then read the explanation to understand the curriculum point.
At a glance
MCQ
Type
practice
Style
Topic
Halogenoalkanes
Question
- A. High temperatures and strong bases
- B. Low temperatures and weak acids
- C. High pressures and weak bases
- D. Room temperature and strong acids
Answer
High temperatures and strong bases
Explanation
Elimination reactions are favored under high temperature conditions and in the presence of strong bases, as these conditions promote the removal of a halogen and a hydrogen atom, leading to the formation of alkenes.
Common mistake
Substitution vs Elimination Conditions
Students often confuse the conditions required for nucleophilic substitution and elimination reactions, thinking they are the same.
Substitution reactions typically occur under conditions of lower temperatures and with a nucleophile present, while elimination reactions require higher temperatures and often a base. To differentiate, remember that substitution replaces a leaving group with a nucleophile, whereas elimination removes a leaving group and forms a double bond.
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