Abstract: Introducing the conductometric precipitation titration method for determining chloride ion content in soy sauce into undergraduate physical chemistry laboratory courses enables students to gain a comprehensive understanding of both the theoretical principles and practical applications of conductometric titration. This experiment not only raises students' awareness of food safety issues but also cultivates their social responsibility and commitment to public service. With its relevance to daily life, the experiment effectively stimulates students' interest in laboratory work. Utilizing standard laboratory equipment and reagents, the procedure can be completed within 3–4 hours, meeting the requirements for fundamental experiments in undergraduate curricula.

Key words: Conductivity titration, Precipitation titration, Conductivity, Physical chemistry experiment