In an experiment where you have a titration curve for a weak acid-strong base reaction...?

Question

How do you determine the unknown concentration of NaOH, the strong base from the graph (the equivalence point data) We have the volume vs pH graphed on the titration curve. Also we have the concentration of the weak acid (acetic acid) and its volume, as well as the volume of NaOH

the strong base - NaOH was the titrant, we had an initial conc of acid which was 0.1M and 25.00 mL volume. We only know volume of base NaOH which was 25.19 mL at the equivalence point! How do i find the concentration of NaOH which was the titrant

Answer 1

At the equivalence point, which will not be at pH 7, the number of moles of base present equals the number of moles of acid added (if, by your description, you added the acid to the base, and you usually know the concentration of what you're adding as the titrant).

So, determine the molarity of the base by:

Mb = MaVa/Vb