Question

Is there any simple way to predict the volume of a second back titration done on a particular antacid substance after completing a titration the first time around?..Thank you every one for responses.

Answer 1

Yes. IF the first titration was correct AND you know how much of the material was added, it should be no trouble to calculate the amount necessary to back titrate. When I did these, I calculated the volume to be back titrated, stopped about 2 or 3 mL BEFORE, then proceeded with the titration.