Pharmaceutical Buffers Quiz
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Questions and Answers

What equation is used to calculate the pH of buffers?

  • Gibbs free energy equation: $ riangle G = riangle H - T riangle S$
  • Henderson-Hasselbalch equation: $pH = pKa + ext{log}(rac{[A^-]}{[HA]})$ (correct)
  • Nernst equation: $E = E^{ heta} - rac{RT}{nF} ext{ln}Q$
  • Arrhenius equation: $k = A e^{-E_a/RT}$

    • Which factor affects the buffer capacity of a buffer solution?

  • Temperature of the solution
  • Presence of a catalyst
  • Concentration of the buffer components (correct)
  • Volume of the solvent

    • What is the ionization constant (Ka) for Acetylsalicylic acid?

  • 1.74x10^-3
  • 7.9x10^-9
  • 3.27x10^-4 (correct)
  • 1.2x10^-10

    • What is the pKa value for Boric acid?

    <p>9.24</p> Signup and view all the answers

    What is the pKb value for Ammonia?

    <p>4.76</p> Signup and view all the answers

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