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Strong Acid-Strong Base Titrations quiz

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  • Why are ICF charts used instead of ICE charts for strong acid-strong base titrations?
    ICF charts are used because strong acids and bases dissociate completely, so calculations are based on moles rather than equilibrium concentrations.
  • What does the equivalence point represent in a strong acid-strong base titration?
    The equivalence point is where the moles of acid equal the moles of base, resulting in complete neutralization.
  • How do you calculate the equivalence volume in a titration?
    Use the formula: molarity of acid × volume of acid = molarity of base × volume of base.
  • What is the pH at the equivalence point of a strong acid-strong base titration at 25°C?
    The pH is 7, indicating a neutral solution.
  • How do you determine pH before the equivalence point when titrating a strong base with a strong acid?
    Calculate the concentration of the excess strong base, find its pOH, and then use pH = 14 - pOH.
  • What happens to pH after the equivalence point in a strong acid-strong base titration?
    The pH is determined by the excess strong acid or base present, resulting in a low pH for excess acid or high pH for excess base.
  • How is the concentration of ions calculated for strong acids and bases?
    The concentration of the acid or base equals the concentration of its dissociated ions because they dissociate 100%.
  • What is the formula for calculating pH from the concentration of H+ ions?
    pH = -log[H+].
  • What is the formula for calculating pOH from the concentration of OH- ions?
    pOH = -log[OH-].
  • How do you find the concentration of a reactant after titration but before the equivalence point?
    Divide the moles of the reactant left by the total volume of the solution.
  • What is the role of the neutral salt formed at the equivalence point in pH calculations?
    If activity coefficients are ignored, the neutral salt does not affect the pH.
  • What is the limiting reactant in a strong acid-strong base titration before the equivalence point?
    The reactant with the smaller number of moles is the limiting reactant and is completely consumed.
  • How does the pH change as you add strong base to a strong acid before reaching the equivalence point?
    The pH gradually increases as the strong base neutralizes the strong acid.
  • What is the law of conservation of mass in the context of titration reactions?
    Matter is neither created nor destroyed; reactants are converted into products, such as neutral salts.
  • How do you determine the pH after adding excess strong base beyond the equivalence point?
    Calculate the concentration of the excess base, find its pOH, and use pH = 14 - pOH.