PAG 6.3 – Preparation of methyl 3-nitrobenzoate

Last updated: 11/03/2020

OCR-A A-Level Chemistry Organic synthesis PAG 6.3 – Preparation of methyl 3-nitrobenzoate

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Question 1 of 26

1. Question
When preparing methyl 3-nitrobenzoate, how much methyl benzoate should be measured out?
- 2.5 cm $^3$
- 3.0 cm $^3$
- 0.5 cm $^3$
- 1.5 cm $^3$
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Question 2 of 26

2. Question
When preparing methyl 3-nitrobenzoate, what measures of nitric acid and sulfuric acid are placed into a test tube?
- 2.0 cm $^3$
- 1.5 cm $^3$
- 3.0 cm $^3$
- 0.5 cm $^3$
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Question 3 of 26

3. Question
When preparing methyl 3-nitrobenzoate, how much ethanol should the crystals be dissolved in?
- 10 cm $^3$
- 20 cm $^3$
- 30 cm $^3$
- 40 cm $^3$
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Question 4 of 26

4. Question
What is methyl 3-nitrobenzoate prepared from?
- Methyl benzoate
- Methyl benzene
- Benzoate
- Benzene
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Question 5 of 26

5. Question
When preparing methyl 3-nitrobenzoate, what acid is methyl benzoate reacted with?
- Sulfuric acid
- Phosphoric acid
- Nitric acid
- Hydrochloric acid
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Question 6 of 26

6. Question
When preparing methyl 3-nitrobenzoate, what type of flask is the methyl benzoate and sulfuric acid first mixed in?
- Conical flask
- Volumetric flask
- Buchner flask
- Round-bottomed flask
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Question 7 of 26

7. Question
When preparing methyl 3-nitrobenzoate, what type of sulfuric acid is used?
- Distilled
- Gaseous
- Dilute
- Concentrated
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Question 8 of 26

8. Question
When preparing methyl 3-nitrobenzoate, what should the methyl benzoate and sulfuric acid be placed in?
- Ice bath
- Beaker
- Measuring cylinder
- Hot bath
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Question 9 of 26

9. Question
Once the methyl benzoate and sulfuric acid are placed in an ice bath, which two acids are mixed together in a test tube?
- Nitric acid and sulfuric acid
- Sulfuric acid and hydrochloric acid
- Nitric acid and phosphoric acid
- Phosphoric acid and sulfuric acid
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Question 10 of 26

10. Question
When preparing methyl 3-nitrobenzoate, what type of nitric acid is used?
- Concentrated
- Distilled
- Dilute
- Gaseous
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Question 11 of 26

11. Question
When preparing methyl 3-nitrobenzoate, what should be done to the conical flask containing the mixture of methyl benzoate, sulfuric acid and nitric acid?
- Filtered under reduced pressure
- Distillation
- Reflux
- Recrystallisation
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Question 12 of 26

12. Question
When preparing methyl 3-nitrobenzoate, once crystals begin to form what should be done?
- Recrystallisation
- Distillation
- Reflux
- Filtered under reduced pressure
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Question 13 of 26

13. Question
When recrystalising, what should the crystals be dissolved in?
- Ethanol
- Hydrochloric acid
- Distilled water
- Sodium hydroxide
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Question 14 of 26

14. Question
When preparing methyl 3-nitrobenzoate, what type of ethanol should the crystals be dissolved in?
- Hot
- Dilute
- Cold
- Concentrated
Correct

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Question 15 of 26

15. Question
When preparing methyl 3-nitrobenzoate, which flask should be used to separate crystals?
- Buchner flask
- Volumetric flask
- Round-bottomed flask
- Conical flask
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Question 16 of 26

16. Question
When preparing methyl 3-nitrobenzoate, what should the separated crystals be rinsed with?
- Distilled water
- Hydrochloric acid
- Ethanol
- Sodium hydroxide
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Question 17 of 26

17. Question
When preparing methyl 3-nitrobenzoate, what should the separated crystals be dried with?
- Absorbant paper
- Paper
- Filter paper
- Tissue
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Question 18 of 26

18. Question
When preparing methyl 3-nitrobenzoate, once recrystallisation has taken place what should be carried out?
- Thin-layer chromatography
- Distillation
- Reflux
- Filtered under reduced pressure
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Question 19 of 26

19. Question
What should be calculated from thin-layer chromatography?
- Rf values
- Concentration of methyl 3-nitrobenzoate
- Volume of methyl 3-nitrobenzoate
- Percentage yield of methyl 3-nitrobenzoate
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Question 20 of 26

20. Question
What is one hazard when using sulfuric acid within an experiment?
- It can cause skin and eye irritation
- It is highly flammable
- It is carcinogenic
- It is highly toxic
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Question 21 of 26

21. Question
What is one hazard when using nitric acid within an experiment?
- It can cause skin and eye irritation
- It is highly flammable
- It is carcinogenic
- It is highly toxic
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Question 22 of 26

22. Question
What is one hazard when using ethanol within an experiment?
- It is highly flammable
- It can cause skin and eye irritation
- It is carcinogenic
- It is highly toxic
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Question 23 of 26

23. Question
What is one hazard when using methyl 3-nitrobenzoate within an experiment?
- It is highly flammable
- It can cause skin and eye irritation
- It is carcinogenic
- It is highly toxic
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Question 24 of 26

24. Question
What is one hazard when using iodine crystals within an experiment?
- It can cause skin and eye irritation
- It is highly flammable
- It is carcinogenic
- It is highly toxic
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Question 25 of 26

25. Question
What should be used to transfer the sample onto the TLC plate?
- Capillary tube
- Pipette tube
- Spatula
- Spoon
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Question 26 of 26

26. Question
What is the definition of chromatography?
- A technique used to analyse and identify components with different types of crude oils
- A technique used to separate and identifying mixtures within large lattices
- A technique used to analyse and separate hydrocarbons
- A technique used for separating and identifying components in a mixture
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