The student provides a focused and detailed description of the main topic, clearly stating the aim of the experiment to determine the concentration of phosphoric acid in different samples of soft drinks. The research question is also well-defined. The background information section is relevant and focused, providing a solid introduction to the chemical concepts of acids and bases and the process of titrations. The chemistry of the experiment is explained clearly, making it easy for the reader to understand. The methodology of the investigation is highly appropriate to the topic, using an acid-base titration and pH curve to find the concentration of the acid in the soft drink samples. The methodology also includes appropriate steps to assure the relevancy and validity of the obtained results. Overall, the student demonstrates a good understanding of the topic and conducts the experiment in a thorough and appropriate manner.
