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Acid and Base Titration Curves quiz

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Terms in this set (15)

  • What is the equivalence point in an acid-base titration curve?
    The equivalence point is when equal moles of acid and base have been mixed together during the titration.
  • On a titration curve, what does the y-axis typically represent?
    The y-axis represents the pH values of the solution.
  • What does the x-axis represent on a pH titration curve?
    The x-axis shows the volume of titrant added, usually in milliliters (ml).
  • How can you identify the equivalence point on a titration curve?
    The equivalence point is at the middle of the sharpest rise in pH on the curve.
  • What does a pH of 7 at the equivalence point indicate about the acid and base?
    A pH of 7 at the equivalence point means both the acid and base are strong and completely neutralize each other.
  • If the titration curve starts at a pH of 1, what does this tell you about the solution?
    It indicates that the solution initially contains a strong acid.
  • What is the titrant in a titration where the pH starts low and increases?
    The titrant is a strong base being added to a strong acid.
  • What happens to the pH after the equivalence point when titrating a strong acid with a strong base?
    The pH rises above 7 because there is excess strong base in the solution.
  • What is the half-equivalence point in a titration?
    The half-equivalence point is when half the amount of titrant needed for equivalence has been added; for weak acid/strong base titrations, it's where concentrations of weak acid and conjugate base are equal.
  • If you start with a strong base and titrate with a strong acid, how does the pH change?
    The pH starts high and decreases as acid is added, reaching pH 7 at the equivalence point.
  • What determines the pH at the equivalence point when titrating a strong acid with a weak base?
    The solution will be acidic (pH < 7) because the strong acid dominates.
  • What determines the pH at the equivalence point when titrating a weak acid with a strong base?
    The solution will be basic (pH > 7) because the strong base dominates.
  • Who determines the nature (acidic, basic, or neutral) of the solution at the equivalence point?
    The stronger reactant (acid or base) determines whether the solution is acidic, basic, or neutral at equivalence.
  • What does it mean if the equivalence point pH is less than 7?
    It means the solution is acidic at equivalence, typically due to a strong acid and weak base titration.
  • What does it mean if the equivalence point pH is greater than 7?
    It means the solution is basic at equivalence, typically due to a weak acid and strong base titration.