Any questions or comments you have can be brought to Drs. 50.00 mL of this resulting solution requires 32.00 mL of a 0.0250 M EDTA solution to reach the equivalence point. 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.