Halogenoalkanes and nucleophilic substitution Quiz
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5 questions, one answer each
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1. Which is a tertiary halogenoalkane?
- A. 1-bromo-2-methylpropane
- B. 2-bromobutane
- C. 2-bromo-2-methylpropane
- D. 1-bromobutane
2. Which reagent converts 1-bromopropane into butanenitrile?
- A. Aqueous potassium hydroxide
- B. Excess ammonia in ethanol
- C. Ethanolic potassium hydroxide
- D. Potassium cyanide in ethanol
3. Aqueous silver nitrate in ethanol is warmed with 1-iodobutane. What is observed?
- A. A yellow precipitate
- B. A white precipitate
- C. A cream precipitate
- D. A black precipitate
4. What is the role of the hydroxide ion when 2-bromobutane is heated with ethanolic potassium hydroxide?
- A. Nucleophile
- B. Base
- C. Electrophile
- D. Catalyst
5. Why do iodoalkanes hydrolyse faster than chloroalkanes?
- A. The C–I bond is more polar
- B. Iodine is more electronegative
- C. The C–I bond has a lower bond enthalpy so is broken more easily
- D. The C–I bond is shorter