3. A 100 mL sample of hard water is titrated with 22.4 mL of the EDTA solution from problem 2. The same amount of MgCl, is added as previously and the total volume of EDTA solution required is 22.44 mL.

3. A 100 mL sample of hard water is titrated with 22.4 mL of the EDTA solution from problem 2. The same amount of MgCl, is added as previously and the total volume of EDTA solution required is 22.44 mL.

Chemical Principles in the Laboratory

11th Edition

ISBN:9781305264434

Author:Emil Slowinski, Wayne C. Wolsey, Robert Rossi

Publisher:Emil Slowinski, Wayne C. Wolsey, Robert Rossi

Chapter28: Determination Of The Hardness Of Water

Section: Chapter Questions

Problem 3ASA: A 100-mL sample of hard water is titrated with the EDTA solution in Problem 2. The same amount of...

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Question

3. A 100 mL sample of hard water is titrated with 22.4 mL of the EDTA solution from problem
2. The same amount of MgCl, is added as previously and the total volume of EDTA solution
required is 22.44 mL.
e) If 1 ppm CaCO;
= 1 mg/liter, what is the water hardness in
ppm CaCO;?
ppm CaCO,

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