Please read question before answering ... Answer: 656600 ppm A 0.2500-g sample of swimming pool oxidizer containing calc
Posted: Tue Jul 05, 2022 9:00 am
Please read question before answering ... Answer: 656600 ppm A0.2500-g sample of swimming pool oxidizer containing calciumhypochlorite Ca(OCl)2 (MM=142.98 g/mol) as the active ingredientwas dissolved in 0.500 M H2SO4 containing excess KI. The liberatediodine required 38.7 mL of NaS2O3 for titration to the end point.The iodine liberated from by the action of excess KI on 101.3 mg ofprimary standard K2Cr2O7 (MM= 294.19 g/mol) dissolved in acidrequired 17.41 mL of NaS2O3 solution for titration. Calculate theppm Ca(OCl)2 in the sample.