Analysis Of Commercial Bleach

Riya Singh Banita Sathpathy Period 1 epitome of a Commercial bleach out Purpose The purpose of this experimentation is to check over the amount of atomic number 11 hypochlorite in commercialized bleach by reacting the bleach with sodium thiosulfate. Procedure In this experiment a solution of sodium thiosulfate of known concentration provide be added to the bleach utilize a buret in a titration procedure. The disappearance of the shadowy blue color of the starch- iodine composite plant will signal the end point. Data running 1Trial 2Trial 3 sign Reading (ml)000 Final Reading (ml)35.736.036.6 Volume of Na2S2O335.7 ml36.0 ml36.6 ml Calculations and Analysis 2 S2O3-2 = I3- = I2 = ClO- Therefore looking at the equation above, we bottomland stop that for every mole of sodium thiosulfate we need half(a) a mole of sodium hypochlorite. (35.7+36+36.6)/3=36.1 ml is the fair volume of the Na2S2O3. (0.0361)(0.1) = 0.00361 0 .00361/(2 ×2.5)=7.22 ×〖10〗^(-4) M NaClO 0.00481/(.005) = 0.96 M NaClO 0.358/5.4= 35.8 % |.358-0.060|= .298 |(0.358-0.06)/0.06|=4.

9% percent error Conclusion In the experiment a redox titration was performed in order to determine the percent of sodium hypochlorite in commercial bleach. This done by reacting the bleach and the sodium thiosulfate in the carriage of iodide ions and starch. Discussions of Theory data-based Sources of Error Pre-Lab Questions Titration is the process, operation, or method of determining the concentration of a substance in solution by adding t o it a pilot burner reagent of known conce! ntration in carefully measured amounts until a reaction of definite and known proportion is completed, as shown by a color change or by voltaic measurement, and then calculating the unknown concentration.If you want to get a full essay, order it on our website: OrderCustomPaper.com

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