The student clearly described how the data were obtained and processed, making each procedural step easy to understand, particularly through the qualitative observations presented in Table 8. The recording and processing of data were detailed and precise, with appropriate units and significant figures applied throughout the work, as seen in Tables 9 and 10. However, the document lacked a clear consideration of the impact of uncertainties on the data and results, particularly regarding measurement errors in gas syringe readings. Despite this, the validity of the conclusions was not compromised, as the student conducted relevant data processing that accurately addressed the research question and demonstrated a strong positive correlation between coffee concentration and reaction rate.
