A 25.00 mL sample of a liquid bleach was diluted to 1000mL in a volumetric flask. A 25-mL portion of the diluted sample was transferred by pipet into an Erlenmeyer flask and treated with excess KI, oxidizing the OCl-and Cl-and producing I3-. The liberated I3-was determined by titratingwith 0.09892 M Na2S2O3, requiring 8.96 mL to reach the starch indicator end point. Report the %w/v NaOCl in the sample bleach.

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