The student provides a focused and detailed description of the main topic, which is the investigation on the effect of temperature on ascorbic acid amount in orange juice. The introduction clearly outlines the purpose of the experiment, demonstrating a clear focus on the main topic throughout the essay. Additionally, the student includes all the necessary parts to make the research question thorough and well-formed, and the essay includes relevant and focused background information, providing a strong foundation for the experiment. The methodology of using redox titration to investigate the effect of temperature on ascorbic acid in orange juice is highly appropriate to the topic and includes appropriate steps to assure the relevancy and validity of the obtained results. However, there is a need for a better explanation of the chemistry involved in the endpoint detection and a more precise statement of the dependent variable to align with the research question.
