Principle

Acid-base titration represents an analytical procedure for determining concentrations of corresponding compounds. The use of pH measuring electrodes also offers the possibility of creating measurement curves.

In this experiment, students record a measurement curve for the titration of a strong acid (hydrochloric acid) with a strong base (sodium hydroxide solution). In doing so, they will then identify the characteristic features of such a titration curve and determine the equivalence point. In the process, the students learn, among other things, that for titrations with strong bases and acids, equivalence point = neutral point. At the equivalence point, the base and the acid are present in equal proportions. The following applies: n(acid) = n(base) This statement can be used to calculate the concentration of the acid.

Benefits

• The experiment is part of a complete solution with numerous experiments from the field of titration and ion detection, and can be used as part of a teaching unit

• In addition to the graphical representation of the measurement data on the measuring instrument, all data can also be transferred to a computer for evaluation

• Experimental literature available for students and teachers: minimum preparation time
• Risk assessment available for students and teachers
• Easy teaching and efficient learning when using the available interactive experimental literature