A 2.50 g sample of a household bleach containing sodium hypochlorite (NaClO) is treated with excess KI solution. The iodine liberated requires 18.0 mL of 0.0200 M Na2S2O3 solution for complete titration. What is the weight percentage of NaClO in the household bleach?
(The redox couples are: ClO-/Cl- ; I2/I- ; S2O32-/ S4O62-)
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A 2.50 g sample of a household bleach containing sodium hypochlorite (NaClO) is treated with excess...
A 0.601 g sample of bleach was treated with an excess of KI. The iodine liberated required 12.34 mL of 0.0692 M Na2S2O3 for titration. What is the percentage of KOCl in the bleach? And can we use NaI to replace KI in the titration? Why?
Household bleach is a solution of sodium hypochlorite. What is the pH of an aqueous solution that is 4.73-% NaClO by mass? (The density of the solution is 1.0 g/mL, and Kb = 2.9 × 10−7)
Analysis of bleach involves two sequential redox reactions: First, bleach is reacted in acid solution with excess iodide anion to produce yellow-colored iodine A sample of a new cleaning product, "Joe's Famous Bleach Cleaner," with a mass of 57.0 g, was diluted with an acetic acid solution containing excess I". A small amount of starch indicator solution was then added, turning the solution a deep bluish-purple. The solution was then titrated with 0.470 M sodium thiosulfate, Na2S203, containing the ion...
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A 0.601 g sample of bleach was treated with an excess of Kl. The iodine liberated required 12.34 mL of 0.0692 M Na2S203 for titration. What is the percentage of KOCI in the bleach? And can we use Nal to replace Kl in the titration? Why? For the toolbar, press ALT+F10 (PC) or ALT+FN+F 10 (Mac).
please I need help with this one question. Titration Procedure Prepare your starch solution by dissolving 0.040g of vitex starch in 20 mL of water. Prepare your 3%diluted commercial bleach solution (3% of the concentration of the commercial bleach, by volume.) Do not discard as you will use this solution for each of your trials. Dependingonyourinstructor’schosenmethod;deliverexactly3mLofcommercialbleach solution to a 100mL volumetric flask using the burette that contains the class’s supply of bleach, or pour some from the bottle into a...
just need help with questions 3. a & b
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Introduction Titration is a common analytical technique that is used to verify the concentrations of chemicals before they are sold as commercial products, in a process known as quality control. In this lab, you will be using a redox titration to find the concentration of the strong oxidizing agent hypochlorite (CIO) which is the active ingredient in bleach. Oxidizing and reducing agents are often determined using a redox titration....