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ANALYSIS OF ASPIRIN BY BACK TITRATION
- Essay length: 1273 words
- Submitted: 18/06/2007
-
Marked by teacher:
Patricia McHugh
Teacher essay summary
Overall this is a four star piece of work. It has an excellent introduction and plan but they could be in a better order to make it easier to understand as back titration can be hard to explain. Good set of results but there was an error in the first calculation which got carried over. Otherwise it is a good piece of work which shows all steps of the calculations clearly. Good analysis of results and suggestions for error given. Improvements would be to include a prediction and some more safety precautions. Good understanding overall.
Marked by teacher Patricia McHugh 08/12/1999
The first 200 words of this essay...
ANALYSIS OF ASPIRIN BY BACK TITRATION
HNC APPLIED SCIENCE
ANGELA COFRE
14 DECEMBER 2006
Analysis of Aspirin by Back Titration
SUMMARY
The purpose of the experiment was to determine the amount of aspirin in a tablet and to compare this with the amount specified on the label. The amount of aspirin calculated from the results obtained from titrimetric analysis to be 317 mg. The stated dose of the tablets on the manufactures label was 300 mg
KEY WORDS
Aspirin
Back Titration
Manufactures Labelling
AIMS AND OBJECTIVES
Objectives
The objectives of this experiment are to determine the amount aspirin in a tablet and to compare this with the amount specified on the label. This was carried out using back titration.
Aims
The aims of the experiment were as follows:
* Calculate the number of moles of HCL used in the reaction.
* To determine the amount aspirin in an aspirin tablet and compare it with the amount specified on the label.
* Calculate the number of moles of NaOH taken for hydrolysis.
* Calculate the number of moles of NaOH
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MbT essay summary
Overall this is a four star piece of work. It has an excellent introduction and plan but they could be in a better order to make it easier to understand as back titration can be hard to explain. Good set of results but there was an error in the first calculation which got carried over. Otherwise it is a good piece of work which shows all steps of the calculations clearly. Good analysis of results and suggestions for error given. Improvements would be to include a prediction and some more safety precautions. Good understanding overall.
