What is the Ka and pKa for a weak monoprotic acid with given titration data?

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SUMMARY

The discussion focuses on calculating the acid dissociation constant (Ka) and its negative logarithm (pKa) for a weak monoprotic acid using titration data. The titration involves 55.48 mL of NaOH required to neutralize 25 mL of the acid, with a recorded pH of 4.96 after 31.64 mL of NaOH addition. The relevant equations discussed include pKa = pH + log(acid/conjugate base) and Ka = products/reactants. The user initially struggled with the lack of NaOH concentration information but later resolved the problem independently.

PREREQUISITES
  • Understanding of weak acid and base titration concepts
  • Familiarity with the Henderson-Hasselbalch equation
  • Knowledge of acid dissociation constants (Ka) and their significance
  • Basic skills in stoichiometry and chemical equilibrium
NEXT STEPS
  • Study the Henderson-Hasselbalch equation in detail
  • Learn how to calculate pKa and Ka from titration curves
  • Explore the concept of buffer solutions and their pH calculations
  • Investigate the impact of concentration on titration results
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Chemistry students, educators, and laboratory technicians involved in acid-base titration experiments and those seeking to deepen their understanding of weak acid behavior in solution.

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Homework Statement


Kk so the problem is that we have 55.48 ml of NaOH was required to titrate 25 mL of a weak monoprotic acid. After 31.64 mL of NaOH had been added, the pH is 4.96 for the solution. Calculate the Ka and pKa for this weak acid.

Homework Equations


pKa= pH + log(acid/conjugate base) maybe?
ka=products/reactants

The Attempt at a Solution


I wanted to make the NaOh and acid a ratio and then since we know what pH is, just use the first equation but I don't think that'll be correct. Other than that I'm not sure how to approach this. Help will be aprreciated thanks
 
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Not enough info. What is the concentration of NaOH?
 
the concentration isn't given, I copied the exact problem.
 
nevermind, i found out how to solve it
 

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