Hassan Tahir
Preparation of Antifebrin
In this experiment, I am going to prepare the organic compound of antifebrin from readily available chemical reagents.
Antifebrin is an odourless solid chemical of white flake-like appearance. Chemically, antifebrin is the amide phenylethanamide CH3ONHC6H5. It’s slightly soluble in water. It does have the ability to self-ignite if it reaches the temperatures of 545˚c but otherwise it’s a stable compound. The pure crystals of antifebrin are plate shaped and white in colour.
The antifebrin in this experiment is prepared from the reaction between phenylammonium chloride (C6H5NH3Cl) and ethanoic anhydride[ (CH3CO)2O ].
Chemical Equation for the Reaction:
C6H5NH3+ Cl- + (CH3CO)2O CH3ONHC6H5 + CH3OOH + HCl
Procedure & Observations:
This is a preview of the whole essay
Peer Reviews
Here's what a star student thought of this essay
Quality of writing
The format is done very well with easy to read tables and information. Grammar, punctuation, and spelling are all to a high standard.
Level of analysis
For the candidate to expand on the experiment and show wider scientific significance they should state the uses of the substance in society. Chemical equation uses correct notation. The candidate presents the method in a very clear way with the procedure written in a table with the observations next to it, which is a brilliant way as it shows us how the experiment progresses as well as communicating in an easy to decipher way. Calculations are correct but decimal places lack consistency and shouldn't to make calculations accurate. Safety precautions are considered which is also good.
Response to question
The candidate carries out the experiment well. They show how the material would be prepared, and work out the calculations correctly to make the substance. Observations are recorded to a high level of detail. To improve the candidate should provide a conclusion and an evaluation based on the yield of the experiment and how the experiment went to point out errors and improvements to the experiment. This shows a deeper understanding of the experiment.
