The student clearly stated the independent variable as the concentration of Hydrochloric Acid and the dependent variable as the volume of CO2 produced, demonstrating a solid understanding of the research question. They effectively described the method of analysis, noting how the reaction rate was measured through CO2 production at various HCl concentrations. While the student provided a thorough background theory and explained the controlled variables, there was a lack of detail regarding the specific techniques used to measure the dependent variable. Overall, the methodology was well-documented, allowing for reproducibility without irrelevant information, and the student comprehensively addressed safety, ethical, and environmental considerations.
