Chemistry Oxidation States and Organic Compounds
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Questions and Answers

What is the definition of oxidation in a redox reaction?

  • The gain of electrons
  • The loss of electrons (correct)
  • The conversion of a neutral species to a positive ion
  • The transfer of electrons

What is the definition of a Lewis base?

  • A species that forms a covalent bond
  • A species that accepts electrons
  • A species that forms an ionic bond
  • A species that donates electrons (correct)

What is the role of a chelating agent in a chemical reaction?

  • To neutralize the pH of the reaction mixture
  • To act as a reducing agent
  • To form multiple coordinate bonds with a metal ion (correct)
  • To increase the solubility of a reactant

What is the definition of a ligand in coordination chemistry?

<p>A molecule or ion that donates a pair of electrons to a metal center (C)</p> Signup and view all the answers

What is the definition of a Lewis acid?

<p>A species that accepts electrons (C)</p> Signup and view all the answers

How is the oxidation state of an atom determined?

<p>By the imaginary charge the atom would have if the shared electrons were divided equally (B)</p> Signup and view all the answers

What does the term 'Oxidation state' refer to?

<p>The actual charge on the atom (A)</p> Signup and view all the answers

In an oxidation state of +6, how many electrons have been lost?

<p>4 electrons lost (C)</p> Signup and view all the answers

What do Lewis acid-base reactions result in?

<p>Formation of dative bonds (A)</p> Signup and view all the answers

In a complexation reaction, what is the role of a ligand?

<p>Forms a complex with the Lewis acid (C)</p> Signup and view all the answers

According to Brønsted-Lowry theory, what defines an acid?

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

What does a Lewis Acid do in a Lewis acid-base reaction?

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

Which of the following is a correct statement about Lewis bases?

<p>Lewis bases are atoms that donate lone pairs of electrons (B)</p> Signup and view all the answers

What is the primary role of a chelating agent?

<p>To form multiple bonds with a single metal ion (B)</p> Signup and view all the answers

Which of the following is an example of a chelating agent discussed in the text?

<p>Ethylenediaminetetraacetic acid (EDTA) (B)</p> Signup and view all the answers

What is the difference between a ligand and a chelating agent?

<p>A ligand can only form one bond, while a chelating agent can form multiple bonds (B)</p> Signup and view all the answers

In the context of coordination compounds, what is the role of a Lewis acid?

<p>To accept lone pairs of electrons and form covalent bonds (C)</p> Signup and view all the answers

Which of the following statements about chelate complexes is correct?

<p>They are formed by the reaction between a Lewis acid and a chelating agent (B)</p> Signup and view all the answers

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