Complexometric Titration of Calcium in Milk Kit Manufacturer,Supplier and Exporter In Ambala
Product Code : EL-ECM-11256
Determine the concentration of calcium in milk by complexometric titration.
The inquiry activity provides an opportunity for students to present their experiment design and results, reinforcing the practice of communicating findings.
Detailed preparation and procedure notes guide the teacher through leading a successful inquiry exercise, including a suggested rubric for assessing student performance.
Teach this laboratory experience using either the guided activity or inquiry activity.
In the guided activity, students prepare and standardize a solution of EDTA and use it to determine the concentration of calcium in milk.
Both the standardization and sample titrations are done 3 times and the average of the values used in the calculations.
The inquiry activity allows students to design a procedure to determine the concentration of calcium in milk and requires them to account for interfering substances such as magnesium and other transition metals.
In the assessment, students consider another complexometric titration, the titration of zinc in zinc lozenges with EDTA, and calculate the concentration of zinc in the lozenge based on data provided.
They also are required to consider what to do if they forget to standardize their titrant before they titrate the zinc.
Provides the following Chemistry experiences: design a procedure to collect data, analyze data, perform error analysis, write and balance chemical equations, use volumetric glassware, standardize a titrant, and perform multiple trials.
Analyzing calcium in milk engages students and makes the concepts covered more interesting.
Materials are sufficient for 30 students working in teams of 3.
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