Sciencemadness Discussion Board

Rate of Addition Effect?

amazingchemistry - 27-5-2013 at 20:07

In determining the peroxide content of percarbonate-based bleaching powder through titration with sodium thiosulfate, I noticed that the rate of addition of sodium thiosulfate is VERY important to ensure accurate results. Why is this? how can we know if this variable will be important for other experiments and how can we account for it?