R3.3 Electron sharing reactions Quiz
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5 questions, one answer each
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1. Which step is a termination step?
- A. Cl₂ → 2Cl•
- B. Cl• + C₂H₆ → •C₂H₅ + HCl
- C. •C₂H₅ + Cl₂ → C₂H₅Cl + Cl•
- D. •C₂H₅ + Cl• → C₂H₅Cl
2. What type of bond breaking forms radicals?
- A. Heterolytic fission
- B. Homolytic fission
- C. Ionisation
- D. Hydrolysis
3. Why does methane not react with chlorine in the dark at room temperature?
- A. Methane is ionic
- B. No radicals are formed to start the chain
- C. Chlorine is a liquid
- D. The reaction is endothermic
4. Which could NOT be formed when methane reacts with excess chlorine in UV light?
- A. CH₂Cl₂
- B. CCl₄
- C. C₂H₆
- D. CH₃OH
5. How many unpaired electrons does a methyl radical, •CH₃, have?
- A. 0
- B. 1
- C. 2
- D. 3