The lead in a 0.3000 gm sample of impure lead ore is precipitated as yellow PbCrO 4 . SO4 2- titrant, 17.28 mL of this titrant needed to reach the equivalence point. Pb in the sample. Acetylsalicylic acid is the active ingredient in aspirin. It took 35.17 mL of 0.5065 M sodium hydroxide to react completely with 3.210 g of acetylsalicylic acid.
Acetylsalicylic acid has one acidic hydrogen.
Plot the results of your calculations as pH versus milliliters of NaOH added. This is the calculation associated with a complexometric titration such as the one you've done in the lab for your water-hardness determination. It is the preliminary chemistry which is the headache here and which will require some time and thought. This is just another example of drawing a titration curve. Refer to your notes.