Addition reactions of alkenes

Last updated: 09/02/2020

AQA A-Level Chemistry Alkenes Addition reactions of alkenes

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Question 1 of 22

1. Question
What is the definition of an electrophilic addition reaction?
- Two or more molecules become bonded to make one product
- When a nucleophile displaces a functional group within a compound
- When an electrophile displaces a functional group within a compound
- The reaction of a nucleophile with an electrophile
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Question 2 of 22

2. Question
What is the definition of an electrophile?
- An electron-pair acceptor
- An ion acceptor
- An ion donator
- An electron-pair donator
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Question 3 of 22

3. Question
Which of the following is a type of electrophile?
- Neutron
- Anion
- Cation
- Pi bonds
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Question 4 of 22

4. Question
Which type of carbocation is the most stable?
- Tertiary
- Saturated
- Primary
- Secondary
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Question 5 of 22

5. Question
Which type of carbocation is the least stable?
- Primary
- Secondary
- Tertiary
- Saturated
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Question 6 of 22

6. Question
What is the definition of hydrogenation?
- The addition of hydrogen to a C=C bond
- The addition of a halogen to a C=C bond
- The addition of steam to a C=C bond
- The addition of a hydrogen halide to a C=C bond
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Question 7 of 22

7. Question
What catalyst is used in a hydrogenation reaction?
- Nickel catalyst
- Phosphoric acid
- Sulfuric acid
- Hydrochloric acid
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Question 8 of 22

8. Question
What type of compound is formed during the hydrogenation of an alkene?
- Alkane
- Alcohol
- Halogenoalkane
- Ester
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Question 9 of 22

9. Question
At what temperature does a hydrogenation reaction take place?
- 150°C
- 100°C
- 300°C
- 200°C
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Question 10 of 22

10. Question
What is the definition of halogenation?
- The addition of a halogen to a C=C bond
- The addition of hydrogen to a C=C bond
- The addition of steam to a C=C bond
- The addition of a hydrogen halide to a C=C bond
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Question 11 of 22

11. Question
What type of reaction is halogenation?
- Electrophilic addition
- Electrophilic substitution
- Nucleophilic addition
- Nucleophilic substitution
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Question 12 of 22

12. Question
What type of compound is formed during the halogenation of an alkene?
- Halogenoalkane
- Alcohol
- Alkene
- Halogen
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Question 13 of 22

13. Question
What type of reaction is the addition of hydrogen halides to alkenes?
- Electrophilic addition
- Nucleophilic substitution
- Electrophilic substitution
- Nucleophilic addition
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Question 14 of 22

14. Question
What is the definition of hydration?
- The addition of water to a C=C bond
- The addition of a hydrogen halide to a C=C bond
- The addition of a halogen to a C=C bond
- The addition of hydrogen to a C=C bond
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Question 15 of 22

15. Question
What type of reaction is hydration?
- Electrophilic addition
- Nucleophilic substitution
- Electrophilic substitution
- Nucleophilic addition
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Question 16 of 22

16. Question
What type of compound is formed during the hydration of an alkene?
- Alcohol
- Haloalkane
- Alkane
- Ester
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Question 17 of 22

17. Question
What catalyst is used in a hydration reaction?
- Phosphoric acid
- Nickel catalyst
- Sulfuric acid
- Hydrochloric acid
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Question 18 of 22

18. Question
At what temperature does a hydration reaction take place?
- 300°C
- 150°C
- 100°C
- 200°C
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Question 19 of 22

19. Question
At what pressure does a hydration reaction take place?
- 65 atm
- 30 atm
- 75 atm
- 15 atm
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Question 20 of 22

20. Question
Describe the reactivity of alkenes compared to alkanes.
- Alkenes are more reactive than alkanes
- Alkanes are more reactive than alkenes
- Both have the same reactivity
- Dependant on the type of alkanes and alkenes
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Question 21 of 22

21. Question
When an alkane is added to bromine water, what observation is seen?
- No colour change
- The bromine water turns blue
- The bromine water turns green
- The bromine water decolourises
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Question 22 of 22

22. Question
When an alkene is added to bromine water, what observation is seen?
- The bromine water turns blue
- No colour change
- The bromine water turns green
- The bromine water decolourises
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