Reaction mechanisms Quiz
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5 questions, one answer each
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1. What is formed by homolytic fission of Cl₂?
- A. Cl⁺ and Cl⁻
- B. Two chlorine radicals
- C. Two chloride ions
- D. Chlorine atoms with paired electrons
2. Which is a propagation step?
- A. Cl₂ → 2Cl•
- B. Cl• + Cl• → Cl₂
- C. CH₃• + Cl₂ → CH₃Cl + Cl•
- D. CH₃• + CH₃• → C₂H₆
3. Where does a curly arrow start when a lone pair forms a new bond?
- A. At the lone pair
- B. At the nucleus
- C. At the positive charge
- D. At the atom being attacked
4. Which step is termination?
- A. Cl• + CH₄ → CH₃• + HCl
- B. Cl₂ → 2Cl•
- C. CH₃• + Cl₂ → CH₃Cl + Cl•
- D. CH₃• + Cl• → CH₃Cl
5. What does an arrow from the C–Br bond to Br show?
- A. Br gains a lone pair
- B. The bond breaks and both electrons go to Br
- C. Br forms a new bond with oxygen
- D. Br loses an electron