Chemistrycan you please tell me which answer is correct and why the others are wrongthank you : 44. In the determination of the total hardness of water, a measured aouof MgY is often added tothe sample prior to titration. Why?a. Because the concentration of Mg ions in the sample solutiiso small and hence by adding moreMg 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 betitrated via the displacement methodc. So that Ca ions in solution replace the Mg ions in Mg-EDTA The liberated Mg" can then betitrated via the back-titration methodd. So that the EDTA from MgY can be used to titrate the Ca" and Mg ions in solution. enlurinn huffarad nartIha nlehilii

determination of hardness of water

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

9th Edition

ISBN:9781133611097

Author:Steven S. Zumdahl

Publisher:Steven S. Zumdahl

Chapter15: Acid-base Equilibria

Section: Chapter Questions

Problem 7RQ: Sketch the titration curve for a weak acid titrated by a strong base. When performing calculations...

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Concept explainers

Acid Base Titration

An acid-base titration is the method of quantitative analysis for determining the concentration of an acid and base by exactly neutralizing it with a standard solution of base or acid having known concentration.

Question

Chemistry

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

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