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The purpose is for the agent to "bind to a metal strongly enough to prevent metal hydroxide from precipitating, but weakly enough to give up the metal when EDTA is added."

-Quantitative Chemical Analysis, 8th edition, Daniel C. Harris

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Q: What is the purpose of an auxiliary complexing agent in an EDTA titration of a metal ion?
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Related questions

Why alkali metal is poor complexing agent?

Because alkali metal is weak oxidizing agent. complexing agent is related with reduction.


What are complexing agent?

complexing agents are ligands that are capable forming complexes with metal ions by the formation of coordinate bond


What are different types of titration?

There are several types of titration techniques, including acid-base titration (determining the concentration of an acid or base), redox titration (determining the concentration of oxidizing or reducing agents), complexometric titration (determining the metal ion concentration using a complexing agent), and precipitation titration (determining the concentration of a dissolved substance by precipitating it).


What is the name of the complexing agent used to determine the total hardness?

caco3


What is the full name of the complexing agent used to determine the total hardness?

caco3


Why nh3 is good complexing agent?

it has a LONE pair of electrons that is sterically unhindered


Why should excess complexing agent be avoided in gravimetric analysis?

To increase solubility product constant by complexation


Difference between acid base titration and redox titration?

Acid base titration involves neutralization reaction between an acid and a base. whereas redox titration involves redox reaction between an oxidizing agent and reducing agent.


What is titration used in the medicine industry?

Medicine is uses to reduce a patient until they are heal. In particularly in chemistry is it the process of finding a concentration of a certain reactants in solutions. This functionality, titration is also known as volumetric analysis, due to a heavy reliance on the measurement of volume and concentration. Titration involves taking an agent of unknown concentration and adding it to a solution. The agent is often known as the titrant and the purpose of adding it o a solution is to create a measurable reaction with the unknown agent. The scientists have to find the exact concentration of unknown agent, also known as the analyte. The concentration of the analyte will not found until the reaction has finished. Often the solution that will change colour to give and assessable endpoint to the reaction.


In permanganate titration's why is nitric acid not used?

Nitric acid, being a strong oxidising agent, interferes with oxidising capacity of KMnO4 hence reducing accuracy of titration.


Why thiosulphate titration is called as redox titration?

A thiosulfate titration is mostly carried out to determine the amount of iodine present in the solution. In these reactions, thiosulfate ion acts as the reducing agent. This types titrations are often called as 'iodometric titrations'.


Difference between iodometry and iodimetry?

When an analyte that is a reducing agent is titrated directly with a standard iodine solution, the method is called "iodimetry". When an analyte that is an oxidizing agent is added to excess iodide to produce iodine, and the iodine produced is determined by titration with sodium thiosulfate, the method is called "iodometry".