The student clearly stated the independent variable as the temperature of the hot water bath and the dependent variable as the rate of reaction between hydrochloric acid and sodium bicarbonate, which are consistently referenced throughout the IA. The research question effectively described the analysis method, focusing on activation energy through specific temperatures and concentrations. The background theory was well-presented, linking relevant concepts such as acid-base reactions and the Arrhenius equation to the investigation. The student also thoroughly explained the chosen techniques for measurement, controlled variables, and safety considerations, demonstrating a comprehensive understanding of the experimental design and methodology. Overall, the methodology was detailed and organized, allowing for reproducibility without irrelevant or repetitive information.
