Additional videos for help:
Answer the Post lab Questions
- From the video, mention at least few things you noticed that is a big safety concern while working in a chemistry lab.
- Why is it important to keep the solutions cold?
- Why is cold water used to rinse the crude product on the Buchner funnel?
- Why is cold methanol used to rinse the crude product on the Buchner funnel?
- Why are boiling chips necessary for recrystallization?
- Why was methanol used to recrystallize the crude product and not another solvent?
- Sulfuric acid serves for three purposes in this reaction: 1) in the formation of the nitronium ion with nitric acid; 2) as the Lewis acid catalyst for EAS and 3) as the solvent for the reaction to dissolve methyl benzoate. Based on the protonated methyl benzoate ions formed, explain why nitration occurs mainly at the meta position and not para or ortho positions. Draw mechanisms to explain this concept.
- Draw the structure of the dinitro ester, if it were to be formed, and what is the probability of a second nitration reaction happening at the meta-nitromethyl benzoate product?
- What would be the product(s) if aniline were to be nitrated? Draw the chemical equation including all the reagents necessary for nitration.
Additional videos for help:
Answer the Post lab Questions
- From the video, mention at least few things you noticed that is a big safety concern while working in a chemistry lab.
- Why is it important to keep the solutions cold?
- Why is cold water used to rinse the crude product on the Buchner funnel?
- Why is cold methanol used to rinse the crude product on the Buchner funnel?
- Why are boiling chips necessary for recrystallization?
- Why was methanol used to recrystallize the crude product and not another solvent?
- Sulfuric acid serves for three purposes in this reaction: 1) in the formation of the nitronium ion with nitric acid; 2) as the Lewis acid catalyst for EAS and 3) as the solvent for the reaction to dissolve methyl benzoate. Based on the protonated methyl benzoate ions formed, explain why nitration occurs mainly at the meta position and not para or ortho positions. Draw mechanisms to explain this concept.
- Draw the structure of the dinitro ester, if it were to be formed, and what is the probability of a second nitration reaction happening at the meta-nitromethyl benzoate product?
- What would be the product(s) if aniline were to be nitrated? Draw the chemical equation including all the reagents necessary for nitration.
