Assignment: To be submitted I. Discuss briefly the application of EDTA as preservative in processed foods and biological

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Assignment: To be submitted
I. Discuss briefly the application of EDTA as preservative in processed foods and biological samples.
II. Solve the following problems:
1. Determine the molar concentration of and EDTA solution of which 26.44mL were required to titrate a sample containing the Ca2+ from 287.4mg of primary standard CaCO3.
2. Calcium is determined in serum by microtitration with EDTA. A 100μL sample is treated with two drops of 2M KOH, Cal-Red indicator is added, and the titration is performed with 0.00122M EDTA, using a microburet. A 0.203mL of EDTA is required for titration. What is the level of Ca in the serum in:mg/dl b. meq/L
3. A 0.72g sample of foot powder containing Zinc was titrated with 21.3mL of 0.02M EDTA. Calculate the % Zn in the sample.