1. When analyzing a 0.260 g sample of dolomite, a precipitate of calcium oxalate CaC2O4 was isolated, for titration of which (after its dissolution in sulfuric acid) 20.4 ml of a KMnO4 solution with an iron titer of 0.0150 g/ml was used. Determine the mass fraction of CaCO3 in dolomite.

If you cannot open the file or have any problems, do not rush to leave a negative review! Contact me and I will quickly help you solve the problem. After purchasing, please leave a positive review of the product :)