A 25.00-mL sample of a commercial bleach is diluted to 1 L. A 25-mL aliquot of the diluted sample is transferred by pipet into a flask that contains an excess of KI, reducing the OCl– to Cl– and producing I3-. The I3- content is determined by titrating with 0.09892 M Na2S2O3, requiring 8.96 mL to reach the starch indicator endpoint. Report the %w/v NaOCl in the sample of bleach.

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The reactions are 2H aq ClO aq 3I aq Claq ... View the full answer