Ionic Product of Water and pH Calculation
18 Questions
1 Views

Choose a study mode

Play Quiz
Study Flashcards
Spaced Repetition
Chat to lesson

Podcast

Play an AI-generated podcast conversation about this lesson

Questions and Answers

What is the equilibrium constant for water, Kw, at 25°C?

  • 1 x 10^-12
  • 1 x 10^-10
  • 1 x 10^-16
  • 1 x 10^-14 (correct)

    • How does the equilibrium of water shift when the temperature increases?

  • Towards the products (correct)
  • Equilibrium shifts randomly
  • Towards the reactants
  • No shift in equilibrium

    • Which type of equilibrium mixture do weak acids and bases form in solution?

  • Kinetic equilibrium
  • Static equilibrium
  • Dynamic equilibrium (correct)
  • Thermodynamic equilibrium

    • How can the pH of weak acids and bases be determined using Ka?

    <p>By taking the negative logarithm of Ka</p> Signup and view all the answers

    In which scenario would you use [HA] and [A-] along with Ka to find [H+]?

    <p>[HA] in excess</p> Signup and view all the answers

    When A- is in excess, what method should be used to find pH?

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

    What defines a buffer solution?

    <p>A solution that resists changes in pH when small volumes of acid or base are added</p> Signup and view all the answers

    In a buffer solution containing Ethanoic acid and Sodium Ethanoate, what happens when H+ ions are added?

    <p>The pH remains constant as H+ ions are removed by reacting with the Ethanoate ions</p> Signup and view all the answers

    What is the purpose of selecting the correct indicator in a titration process?

    <p>To change color at the endpoint of the titration</p> Signup and view all the answers

    What do acidic buffer solutions contain?

    <p>Weak acid and salt of that weak acid</p> Signup and view all the answers

    What kind of change in pH can be expected in a buffer solution when a small volume of acid is added?

    <p>Change in pH by 0.1 or 0.01 units</p> Signup and view all the answers

    How are basic buffer solutions defined?

    <p>Contain a weak base and a salt of that weak base</p> Signup and view all the answers

    What does a pH titration curve illustrate?

    <p>How the pH of a solution changes during an acid-base reaction.</p> Signup and view all the answers

    In a strong acid + weak base reaction, where does the neutralization point typically occur?

    <p>Below pH 7</p> Signup and view all the answers

    Which indicator is commonly used for reactions with a more basic neutralization point?

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

    What happens to methyl orange at the neutralization point?

    <p>Turns yellow</p> Signup and view all the answers

    In which type of acid-base reaction does the neutralization point typically occur around pH 7?

    <p>Strong Acid + Strong Base</p> Signup and view all the answers

    What is the purpose of adding alkali to an acid in a titration experiment?

    <p>To generate a more accurate titration curve</p> Signup and view all the answers

    More Like This

    Use Quizgecko on...
    Browser
    Open
    Browser
    Browser