Weak Acids and Bases
15 Questions
0 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 a hydrogen ion?

  • An electron
  • An atom
  • A proton (correct)
  • A proton and an electron

    • Which of the following statements is true about the pH scale?

  • The lower the pH, the stronger the base
  • The higher the pH, the stronger the acid (correct)
  • A pH of 7 is acidic
  • The pH scale ranges from 0-14

    • What happens to a strong acid like HCl when mixed with water?

  • It becomes neutral
  • It becomes a weak base
  • It dissociates into hydrogen ions and chloride ions (correct)
  • It loses its acidity

    • How does a strong base differ from a weak base in terms of dissociation?

    <p>Strong bases dissociate more completely than weak bases</p> Signup and view all the answers

    What does a substance with a low pH indicate?

    <p>It is a strong acid</p> Signup and view all the answers

    What defines an acid according to its behavior in water?

    <p>It donates hydrogen ions</p> Signup and view all the answers

    Which ion characterizes a hydrogen ion (proton)?

    <p>$H^+$</p> Signup and view all the answers

    What is the difference between a strong acid and a weak acid?

    <p>Strong acids dissociate more easily than weak acids.</p> Signup and view all the answers

    How is the acidity constant (Ka) helpful in measuring an acid's ability to donate a hydrogen ion?

    <p>Ka shows how likely a substance is to donate a hydrogen ion.</p> Signup and view all the answers

    How is pKa calculated and what does a lower pKa value indicate?

    <p>pKa is calculated by taking the negative log of Ka; a lower pKa indicates a stronger acid.</p> Signup and view all the answers

    What happens when an acid donates a proton?

    <p>It becomes a conjugate base.</p> Signup and view all the answers

    Which of the following is NOT a strong acid?

    <p>(CH3CH2)2NH - Diethylamine</p> Signup and view all the answers

    What differentiates strong bases from weak bases?

    <p>Weak bases do not dissociate completely like strong bases.</p> Signup and view all the answers

    Why is it important to differentiate between strong and weak acids and bases?

    <p>To understand their effect on blood pH regulation.</p> Signup and view all the answers

    "Buffer" solutions play a key role in maintaining blood pH stability. What is the function of buffers?

    <p>Buffers prevent rapid changes in pH by absorbing excess H+ or OH- ions.</p> Signup and view all the answers

    More Like This

    Use Quizgecko on...
    Browser
    Open
    Browser
    Browser