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

  • Thread starter Thread starter feelau
  • Start date Start date
  • Tags Tags
    Chem Homework
AI Thread Summary
To calculate the Ka and pKa for a weak monoprotic acid using titration data, the key information includes the volume of NaOH used (55.48 mL) to titrate 25 mL of the acid and the pH (4.96) after adding 31.64 mL of NaOH. The relevant equations are pKa = pH + log(acid/conjugate base) and Ka = products/reactants. The concentration of NaOH is crucial for accurate calculations but was not provided in the problem statement. The original poster initially struggled with the approach but later found a solution. Understanding the relationship between the acid and its conjugate base is essential for determining the pKa and Ka values.
feelau
Messages
61
Reaction score
0

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
 
Physics news on Phys.org
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
 
I don't get how to argue it. i can prove: evolution is the ability to adapt, whether it's progression or regression from some point of view, so if evolution is not constant then animal generations couldn`t stay alive for a big amount of time because when climate is changing this generations die. but they dont. so evolution is constant. but its not an argument, right? how to fing arguments when i only prove it.. analytically, i guess it called that (this is indirectly related to biology, im...
Back
Top