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Mass of NaOCl in commercial bleach titrated. ?

Mass of NaOCl in commercial bleach titrated. ?

Chemistry
Chemistry
10th Edition
ISBN:9781305957404
Author:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste
Publisher:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste
Chapter1: Chemical Foundations
Section: Chapter Questions
Problem 1RQ: Define and explain the differences between the following terms. a. law and theory b. theory and...
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Molarity of Na2S2O3 (stock solution).    0.100 M

Volume of diluted bleach titrated (taken from the volumetric flask).  10ml

Initial Burette Reading.  14.80

Final Burette Reading     25.60

Volume of Na2S2O3 used in the titration (mL).    10.80

Moles of Na2S2O3 used in the titration.   1.71

Moles of S2O3–2 used.     1.66

Moles of I2 initially present in titration mixture 0.83

Moles of NaOCl in the diluted bleach titrated.   0.415

Volume of bleach titrated. 1ml

Mass of NaOCl in commercial bleach titrated.  ?

Important Equations: NaOCI (ag) + 2 KI (aq) +2 HCI (aq) I2 (aq) + 2 KCI (aq) + Nacl (aq) + H2O (1) colorless colorless reddish-brown colorless I2 (aq) 2 Na,S203 (aq) 2 Nal (aq) + Na,S,O6 (aq) + Reddish-brown colorless colorless
Transcribed Image Text:Important Equations: NaOCI (ag) + 2 KI (aq) +2 HCI (aq) I2 (aq) + 2 KCI (aq) + Nacl (aq) + H2O (1) colorless colorless reddish-brown colorless I2 (aq) 2 Na,S203 (aq) 2 Nal (aq) + Na,S,O6 (aq) + Reddish-brown colorless colorless
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