Question

You have 125.0mL of a solution of H3PO4, but you don't know its concentration. If you titrate the solution with a 4.56M solution of NaOH and reach the endpoint when 134.1mL of the base are added, what is the concentration of the acid?

Answer 1

4.89 mol/L

You can check the attached image for work.

-T.B.