pH Calculations Using Acid-Base Dissociation Constants
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Questions and Answers

What does the Henderson-Hasselbalch equation calculate?

  • The ratio of hydronium to hydroxide ions
  • The dissociation constant of a weak base
  • The concentration of acid in a solution
  • The pH of buffer solutions (correct)

    • In the context of buffer solutions, what does a buffer solution resist?

  • Changes in temperature
  • Changes in volume
  • Changes in pH (correct)
  • Changes in color

    • What is the purpose of multiplying the equilibrium-constant expressions for ammonia and its conjugate acid?

  • To calculate the base dissociation constant for the ammonium ion
  • To determine the acid dissociation constant for ammonia
  • To prepare a buffer solution (correct)
  • To calculate the pH of a solution

    • Why do weak acids or bases undergo partial dissociation in water?

    <p>To create a balance between reactants and products</p> Signup and view all the answers

    What determines whether a solution containing a weak acid and its conjugate base is acidic, neutral, or basic?

    <p>The relative concentrations of hydronium and hydroxide ions</p> Signup and view all the answers

    Which equilibrium constant expression is used to calculate the pH of a buffer solution?

    <p>$K_a$ (Acid dissociation constant)</p> Signup and view all the answers

    What role does the conjugate base play in a buffer solution?

    <p>It maintains the pH of the solution</p> Signup and view all the answers

    'Generally, buffer solutions are prepared from a conjugate acid/base pair.' Why is this pairing important for buffers?

    <p>To stabilize the pH of the solution</p> Signup and view all the answers

    'Dissociation Constants for Conjugate Acid-Base Pairs' involves which key concept?

    <p>$K_a$ and $K_b$ relationship</p> Signup and view all the answers

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