For the following lab Complexometeric Determination of Magnesium... Mg^2+ + Y^4- -> MgY^2- Unknown MgO was titrated with roughly 0.03M of Na2EDTA and pH10 buffer solution (~5mL to MgO) using Nh4CL(s) and NH4OH, 8 drops of Calmigate Indictor and titrated to a blue endpoint with the EDTA (disappearance of the last tinge of red) 1. a. Why is it necessary to buffer the solution to a pH between 10 and 12? b. What is the structure and full name for EDTA? c. Although EDTA has, in its fully protonated form, 4 hydrogen atoms that can be lost, it is listed as a hexadentate ligand. Explain why this is the case

For the following lab Complexometeric Determination of Magnesium... Mg^2+ + Y^4- -> MgY^2- Unknown MgO was titrated with roughly 0.03M of Na2EDTA and pH10 buffer solution (~5mL to MgO) using Nh4CL(s) and NH4OH, 8 drops of Calmigate Indictor and titrated to a blue endpoint with the EDTA (disappearance of the last tinge of red) 1. a. Why is it necessary to buffer the solution to a pH between 10 and 12? b. What is the structure and full name for EDTA? c. Although EDTA has, in its fully protonated form, 4 hydrogen atoms that can be lost, it is listed as a hexadentate ligand. Explain why this is the case

Fundamentals Of Analytical Chemistry

9th Edition

ISBN:9781285640686

Author:Skoog

Publisher:Skoog

Chapter17: Complexation And Precipitation Reactions And Titrations

Section: Chapter Questions

Problem 17.42QAP

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