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44. In the determination of the total hardness of water, a measured aoof MgY is often added to the sample prior to titration. Why? Because the concentration of Mg ions in the sample solutiiso small and hence by adding more Mg ions the end point becomes sharper.

44. In the determination of the total hardness of water, a measured aoof MgY is often added to the sample prior to titration. Why? Because the concentration of Mg ions in the sample solutiiso small and hence by adding more Mg ions the end point becomes sharper.

Chemistry
Chemistry
10th Edition
ISBN:9781305957404
Author:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste
Publisher:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste
Chapter1: Chemical Foundations
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Problem 1RQ: Define and explain the differences between the following terms. a. law and theory b. theory and...
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can you please tell me which answer is correct and why the others are wrong

thank you :

44. In the determination of the total hardness of water, a measured aouof MgY is often added to the sample prior to titration. Why? a. Because the concentration of Mg ions in the sample solutiiso small and hence by adding more Mg ions the end point becomes sharper. b. So that Ca ions in solution replace the Mg ions in M EDTA. The liberated M can then be titrated via the displacement method c. So that Ca ions in solution replace the Mg ions in Mg-EDTA The liberated Mg" can then be titrated via the back-titration method d. So that the EDTA from MgY can be used to titrate the Ca" and Mg ions in solution . enlurinn huffarad nart Iha nlehilii
Transcribed Image Text:44. In the determination of the total hardness of water, a measured aouof MgY is often added to the sample prior to titration. Why? a. Because the concentration of Mg ions in the sample solutiiso small and hence by adding more Mg ions the end point becomes sharper. b. So that Ca ions in solution replace the Mg ions in M EDTA. The liberated M can then be titrated via the displacement method c. So that Ca ions in solution replace the Mg ions in Mg-EDTA The liberated Mg" can then be titrated via the back-titration method d. So that the EDTA from MgY can be used to titrate the Ca" and Mg ions in solution . enlurinn huffarad nart Iha nlehilii
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