Acid-Base Parameters and Drug Action
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Questions and Answers

What is the equilibrium constant for the dissociation of water (H2O) as given by Equation 1.2?

  • Keq = [H2O] / [H+][OH-]
  • Keq = [H+][OH-] / [H2O] (correct)
  • Keq = [H+][OH-]
  • Keq = [OH-] / [H2O][H+]
  • In pure water, what is the molar concentration of H+ ions?

  • [H+] = 1 X 10−14 M
  • [H+] = 55.5 M
  • [H+] = 1 X 10−7 M (correct)
  • [H+] = [OH−]
  • What is the value of the ion product constant (Kw) for water?

  • Kw = 1.8 X 10−16 M
  • Kw = 1 X 10−14 M2 (correct)
  • Kw = [H+] X[OH−]
  • Kw = 55.5 M
  • What is the product of the molar concentration of H+ and OH- ions at a particular temperature?

    <p>[H+] X[OH−] (D)</p> Signup and view all the answers

    What does Kw represent in an aqueous solution?

    <p>The ion product constant (A)</p> Signup and view all the answers

    What does the ion product constant (Kw) represent in an aqueous solution?

    <p>The product of the molar concentration of H+ and OH- ions at a particular temperature (C)</p> Signup and view all the answers

    What is the equilibrium constant for the dissociation of water as given by Equation 1.2?

    <p>Keq = [H+][OH-] / [H2O] (C)</p> Signup and view all the answers

    Which expression gives the equilibrium constant for the dissociation of water according to Equation 1.3?

    <p>Keq [H2O]=[H+] [OH- ] (A)</p> Signup and view all the answers

    What does Kw equal to in pure water?

    <p>1 X 10^-14 M^2 (C)</p> Signup and view all the answers

    What is the product of the molar concentration of H+ and OH- ions at a particular temperature?

    <p>[H+] [OH-] = Kw (C)</p> Signup and view all the answers

    What is the primary focus of chemistry?

    <p>The study of composition and structure (B)</p> Signup and view all the answers

    In chemical reactions, what remains the same despite the formation of new molecules?

    <p>Chemical nature of atoms (A)</p> Signup and view all the answers

    What distinguishes a new molecule formed from a chemical reaction from its parent molecules?

    <p>Change in atomic composition (C)</p> Signup and view all the answers

    What represents the essential focus of modern life chemistry?

    <p>Synthesis of medicines from chemicals (A)</p> Signup and view all the answers

    Which aspect plays a crucial role in the formation of new molecules during chemical reactions?

    <p>Rearrangement of atoms (C)</p> Signup and view all the answers

    What is the key role played by atoms and molecules during chemical reactions?

    <p>Production of new molecules with specific properties (D)</p> Signup and view all the answers

    What is the branch of chemistry responsible for determining the composition of substances, both qualitatively and quantitatively?

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

    Which branch of chemistry is involved in providing assurance of the quality, safety, and efficacy of new medicines in the drug development process?

    <p>Analytical chemistry (C)</p> Signup and view all the answers

    What is the primary source of drug molecules involved in all processes in the drug discovery phase?

    <p>Natural sources (D)</p> Signup and view all the answers

    Which type of drug molecule purification process involves extraction, isolation, and identification?

    <p>Chemical purification (D)</p> Signup and view all the answers

    In the drug development steps, which phase involves pre-formulation and formulation studies to support the drug development process?

    <p>Development phase (B)</p> Signup and view all the answers

    Which organic substance can be traced back to a single organic compound known as a nucleotide?

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

    What is chemotherapy primarily used to treat in patients?

    <p>Cancer (B)</p> Signup and view all the answers

    What is the branch of chemistry responsible for improving nutrition and creating disease-free environments?

    <p>Biochemistry (B)</p> Signup and view all the answers

    Which branch of chemistry involves small molecules like aspirin or ethanol, as well as larger biological molecules like insulin or prolactin?

    <p>Organic chemistry (C)</p> Signup and view all the answers

    What type of radiation therapy is used to treat patients with cancer?

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

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