Titration Introduction Experiment

Purpose of This Experiment To understand why titrations are done To learn how to perform a titration

Titrations A titration uses a known solution to find information about another substance. We know the molarity and volume used of NaOH and the volume of HCl used. That information will be used to calculate the molarity of HCl.

Acid Base Titration This experiment uses an acid base neutralization reaction OH1- + H1+ → H2O At the equivalence point, moles OH1- = moles H1+ At the endpoint, a color change will occur to show us the equivalence point An indicator is used to cause the color change

Equipment Setup 10.0 mL of HCl are pipetted into flask Add a few drops of the indicator. The NaOH is added from the burette to the flask. Stop the titration when the solution becomes very light pink (this color pink is too dark).

Remember….. The NaOH solution is the known substance; we know the molarity and volume used (measured from buret) The HCl solution is the substance we need more information about; we are calculating the molarity of the HCl solution M = ( moles / L ) moles OH1- = (MOH1-) (LOH1-) MH1+ = (moles H1+ / LH1+)