In one experiment, 25.0 mL of the unknown KOH solution is placed in a beaker. Added to the KOH solution in the beakder is 25.0 mL of water and a few drops of phenolphthalein. The KHC2O4 solution is titrated into the dilute base.
1. Determine the concentration of the original KOH solution? The volume of KHC2O4 solution required to reach equivalence is 26.4 mL.
2. Explain what specific observation identifies the endpoint of the titration?
3. Determine the molar concentration of K+(aq) in the reaction mixture at the equivalence point?