How does the solubility of aspirin in water (expressed as maximum mass dissolved in 1 dm3) vary with temperature (20, 25, 30, 35, 40, 45 ºC), determined by back-titration of excess NaOH with HCl solution?SL
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Overall Score
24/24
Criteria A: Research Design
6/6
0
3
6
Criteria Strands
A.1Research question context
Excellent
A.2Methodological considerations
Good
A.3Methodology description
Good
Criteria Feedback
- Your research question is focused, quantitative, and clearly set within a relevant chemical context.
- You justify the method with strong chemical reasoning, including aspirin’s functional groups, solubility, and the choice of back-titration.
- Your procedure is detailed enough for another student to follow with only minor clarifications.
- There are a few inconsistencies in the procedure, especially around the temperature range and repeat structure.
- Some important implementation details are not fully specified, such as the standardized concentrations and the exact preparation of repeats.
- A small number of unit and wording issues reduce complete reproducibility.
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
Good
Criteria Feedback
- Your raw and processed data are clearly organised and generally easy to follow.
- You show relevant processing steps, including the back-titration calculation, dilution correction, conversion to solubility, and graphing of the temperature trend.
- You make a meaningful effort to address uncertainty through apparatus values, ranges, standard deviations, and error bars.
- There are some internal inconsistencies in the raw data and processed tables that reduce precision.
- Your uncertainty treatment is not fully complete, especially where repeat scatter and concentration standardization should be included.
- A few processing choices, such as excluding a value without a fully convincing justification, weaken confidence in the final numbers.
Criteria C: Conclusion
6/6
0
3
6
Criteria Strands
C.1Conclusion relevance and support
Good
C.2Scientific context comparison
Excellent
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.