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6. A product is insoluble in water and contains water soluble impurities- which of these techniques is most appropriate for extracting the product?
- Seperation
- Distillation
- Recrystallisation
- Drying
7. Conditions & reactant for elimination of halogenoalkanes?
- Hot, ethanolic, reflux, sodium hydroxide
- Hot, aqueous, reflux, acid catalyst
- Hot, ethanolic, distilled, sodium hydroxide
- Warm, aqueous, potassium hydroxide, distillef
8. Conditions for nucleophilic substitution with ammonia?
- Cold, ethanolic
- Warm, ethanolic
- Cold, aqueous
- Warm, aqueous
9. Which of these could be a product of base hydrolysis of an ester?
- OH ion
- Ethanoate ion
- Propanoic acid
- Ethanal
10. What are the conditions for nucleophilic substitution: halogenoalkanes with cyanide?
- Cold, distilled, aqueous
- Warm, ethanolic, reflux
- Warm, aqueous, reflux
- Warm, acid catalyst, reflux
11. What is a use of quaternary ammonium salts?
- Fertilisers
- Bases
- Cationic surfactants
- Plasticisers
12. Which of these is most likely to undergo elimination?
- 2-bromo-2-methylbutane
- 1-bromopropane
- 1,2-dibromopropane
- 2-bromo-3-methylbutane
13. How do you form alkyl hydrogen sulfates?
- Alkenes with cold, conc sulfuric acid
- Alkenes with warm, conc sulfuric acid
- Halogenoalkanes with warm, conc sulfuric acid
- Halogenoalkanes with warm, ethanolic sulfuric acid
14. Which of these is NOT a use of an ester?
- Flavourings
- Added to plastics to make them more rigid
- Solvents
- Placticisers
15. What is washing?
- Adding water to an aqueous solution to remove non-polar impurities
- Taking an organic solvent which the product is more soluble in than water, shaking it, and running off the aqueous layer in a separating funnel
- Adding a liquid to impure product and shaking to remove impurities
- Adding a drying agent to an aqueous solution to remove water
16. Which of these is the strongest base?
- tetramethylamine
- diethylamine
- phenylamine
- ammonia
17. Conditions and reactants for acid hydrolysis of an ester?
- Strong aid, distilled
- Strong acid, reflux
- Dilute acid, reflux
- Dilute acid, distilled
18. What is the charge on the nitrogen atom in quaternary ammonium salts?
19. Carbon-halogen bond enthalpy increases...?
- Right to left along the period
- Down the group
- Up the group
- Left to right along the period
20. Which of these halogenoalkanes will react the slowest?
- Fluoroethane
- Iodoethane
- Chloroethane
- Bromoethane