How does ethanol percentage (0%, 20%, 40%, 60%, 80%) in the aqueous phase affect the partition coefficient of aspirin between water and oil phase determined through back titration?SL
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Overall Score
20/24
Criteria A: Research Design
5/6
0
3
6
Criteria Strands
A.1Research question context
Excellent
A.2Methodological considerations
Good
A.3Methodology description
Moderate
Criteria Feedback
- You framed a specific, chemically focused research question with a clear variable range and a suitable analytical approach.
- Your background explains why aspirin should partition differently between solvents by linking structure, polarity, and ionisation.
- You included methodological controls and pilot-informed choices that show genuine planning.
- The stated ethanol percentage does not clearly match the final mixture after all additions, which weakens the exactness of the design.
- Using commercial tablets introduces excipients that are not accounted for in the method.
- Some key preparation details are inconsistent, especially the aspirin stock concentration and mass statements.
Criteria B: Data Analysis
6/6
0
3
6
Criteria Strands
B.1Communication of data recording and processing
Good
B.2Consideration of uncertainties
Moderate
B.3Data processing quality
Poor
Criteria Feedback
- You present raw and processed data in a structured way that makes the workflow easy to follow.
- Your sample calculation helps show how the titration data are converted into concentration and partition values.
- You make a real attempt to address uncertainty through repeats, standard deviations, and propagated error.
- There is a major stoichiometric problem in the way aspirin hydrolysis is converted from titration results.
- Some tables and labels are imprecise, which reduces clarity in the presentation of calculated values.
- The uncertainty treatment is incomplete because several important sources of error are not fully incorporated.
Criteria C: Conclusion
3/6
0
3
6
Criteria Strands
C.1Conclusion relevance and support
Moderate
C.2Scientific context comparison
Moderate
Criteria Feedback
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Criteria D: Evaluation
6/6
0
3
6
Criteria Strands
D.1Methodological weaknesses
Excellent
D.2Suggested improvements
Excellent
Criteria Feedback
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- Ut enim ad minim veniam, quis nostrud exercitation ullamco laboris nisi ut aliquip ex ea commodo consequat.
- Duis aute irure dolor in reprehenderit in voluptate velit esse cillum dolore eu fugiat nulla pariatur.
- Excepteur sint occaecat cupidatat non proident, sunt in culpa qui officia deserunt mollit anim id est laborum.