Pharmaceutical Analytical Chemistry II: Complexometric Titrations

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What is the coordination number of Ni2+ in the complex Ni(CN)42-?

4

Which of the following is not a characteristic of a chelating agent?

Forms complexes with a single coordinate bond per ligand molecule

In EDTA titrations, the titration curve has a single steep inflection region leading to a sharp endpoint because:

The stable chelate is formed in one step

What is the coordination number of Fe3+ in the complex Fe(CN)63-?

<p>6</p> Signup and view all the answers

What is the key difference between a linear complex and a chelate complex?

<p>Chelate complexes are formed by ligands that donate multiple electron pairs</p> Signup and view all the answers

What is the coordination number of Ag+ in the complex Ag(NH3)2+?

<p>2</p> Signup and view all the answers

What is the key characteristic of a chelating agent?

<p>It has multiple donor sites that can form coordinate bonds with a metal ion.</p> Signup and view all the answers

In a complexation reaction, which of the following statements is true?

<p>The ligand donates both electrons in the coordinate bond to the metal ion.</p> Signup and view all the answers

What is the coordination number of Zn2+ and Cu2+ in their respective complexes?

<p>4</p> Signup and view all the answers

Which of the following statements about chelate complexes is true?

<p>Chelate complexes are more stable than linear complexes due to the chelate effect.</p> Signup and view all the answers

What is the maximum number of donor sites a chelating agent can have?

<p>There is no maximum number of donor sites.</p> Signup and view all the answers

In a complexometric titration, what is the significance of the steep inflection region in the titration curve?

<p>It indicates the formation of a stable complex in a single step.</p> Signup and view all the answers

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