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Complexometric Titration and EDTA Quiz

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Questions and Answers

What is the preferred form of EDTA for preparing the standard solution?

Free acid

Hygroscopic form

Disodium salt (correct)

Metal-bound form

What is the molecular weight of EDTA?

372.24g/mol (correct)

291.40g/mol

419.33g/mol

284.16g/mol

What is the role of EDTA in products such as detergents and food additives?

Increase metal content in food

Enhance metal-catalyzed oxidation of food

Prevent metal-catalyzed oxidation of food (correct)

Accelerate food spoilage

In what type of container are EDTA solutions best stored?

<p>Polyethylene (A)</p> Signup and view all the answers

What is the function of EDTA in complexometric titration?

<p>Forms strong 1:1 complexes with metal ions (A)</p> Signup and view all the answers

Flashcards

EDTA form for standard solution

Disodium salt is the preferred form of EDTA for preparing standard solutions.

EDTA molecular weight

The molecular weight of EDTA is 372.24g/mol.

EDTA role in detergents/food

EDTA prevents metal-catalyzed oxidation in food products.

Best EDTA storage container

Polyethylene containers are best for storing EDTA solutions.

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EDTA in complexometric titration

EDTA forms 1:1 complexes with metal ions in titrations, making it excellent in this process.

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Study Notes

EDTA Characteristics

The preferred form of EDTA for preparing the standard solution is the disodium salt (Na2H2EDTA).

EDTA Properties

The molecular weight of EDTA is 292.24 g/mol.

EDTA Applications

EDTA plays a role in products such as detergents and food additives, where it acts as a chelating agent, removing ions that can interfere with their functionality.

EDTA Storage

EDTA solutions are best stored in glass or polyethylene containers, as EDTA can react with metals and contaminate the solution.

EDTA in Complexometric Titration

The function of EDTA in complexometric titration is to react with metal ions to form a stable, water-soluble complex, allowing for the precise measurement of the metal ion concentration.

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Description

Test your knowledge of complexometric titration and EDTA titration with this quiz. Explore the principles and procedures of this volumetric method for metal determination, as well as the use of metal-ion indicators.