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Analysis of bleach involves two sequential redox reactions: First, bleach is reacted in acid solution with excess iodide anion to produce yellow-colored iodine: CIO + 2H + 21-I2 + Cl+ H20 Constants Peniodic Table A sample of a new cleaning product, "Joe's Famous Bleach Cleaner," with a mass of 68.0 g, was diluted with an acetic acid solution containing excess I. A small amount of starch indicator solution was then added turming the solution a deep bluish-purple. The solution was then titrated with 0.490 M sodium thiosulfate, Na,S,0. containing the ion S2O3. A volume of 45.0 mL of sodium thiosulfate, the titrant, was needed to turn the Then, to determine how much of the iodine was formed, the solution is titrated with sodium thiosulfate solution: solution colorless. 12 + 2S2O32--+21- + S4O,2- Percent composition To obtain percent composition by mass, use the equation given here: A bit of starch is added to the titration reaction, Starch is intensely blue in the presence of I2. The solution thus turns from deep blue to colorless at the reaction equivalence point. x 100% percent composition = mass due to specific component total mass of the mixture Fart A What is the percentage composition by mass of NaCIO in the bleach product? Express your answer to three significant figures and include the appropriate units. > View Available Hint(s) ? HA P Pearson 9 1122

Analysis of bleach involves two sequential redox reactions: First, bleach is reacted in acid solution with excess iodide anion to produce yellow-colored iodine: CIO + 2H + 21-I2 + Cl+ H20 Constants Peniodic Table A sample of a new cleaning product, "Joe's Famous Bleach Cleaner," with a mass of 68.0 g, was diluted with an acetic acid solution containing excess I. A small amount of starch indicator solution was then added turming the solution a deep bluish-purple. The solution was then titrated with 0.490 M sodium thiosulfate, Na,S,0. containing the ion S2O3. A volume of 45.0 mL of sodium thiosulfate, the titrant, was needed to turn the Then, to determine how much of the iodine was formed, the solution is titrated with sodium thiosulfate solution: solution colorless. 12 + 2S2O32--+21- + S4O,2- Percent composition To obtain percent composition by mass, use the equation given here: A bit of starch is added to the titration reaction, Starch is intensely blue in the presence of I2. The solution thus turns from deep blue to colorless at the reaction equivalence point. x 100% percent composition = mass due to specific component total mass of the mixture Fart A What is the percentage composition by mass of NaCIO in the bleach product? Express your answer to three significant figures and include the appropriate units. > View Available Hint(s) ? HA P Pearson 9 1122

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
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135 of 147 Constants Periodic Table Analysis of bleach involves two sequential redox reactions: First, bleach is reacted in acid solution with excess iodide anion to produce yellow-colored iodine: CIO + 2H+ + 21-I2 + Cl- + H2O A sample of a new cleaning product, "Joe's Famous Bleach Cleaner," with a mass of 68.0 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 0.490 M sodium thiosulfate, NazS20. containing the ion S203. A volume of 45.0 mL of sodium thiosulfate, the titrant, was needed to turn the Then, to determine how much of the iodine was formed, the solution is titrated with sodium thiosulfate solution: solution colorless. I2 + 2S2O,2-→21- + S40,2- Percent composition To obtain percent composition by mass, use the equation given here: A bit of starch is added to the titration reaction, Starch is intensely blue in the presence of I2. The solution thus turns from deep blue to colorless at the reaction equivalence point. mass due to specific component x 100% percent composition total mass of the mixture • Fart A What is the percentage composition by mass of NaCIO in the bleach product? Express your answer to three significant figures and include the appropriate units. • View Available Hint(s) HA Pearson 90 11.22 aer
Transcribed Image Text:135 of 147 Constants Periodic Table Analysis of bleach involves two sequential redox reactions: First, bleach is reacted in acid solution with excess iodide anion to produce yellow-colored iodine: CIO + 2H+ + 21-I2 + Cl- + H2O A sample of a new cleaning product, "Joe's Famous Bleach Cleaner," with a mass of 68.0 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 0.490 M sodium thiosulfate, NazS20. containing the ion S203. A volume of 45.0 mL of sodium thiosulfate, the titrant, was needed to turn the Then, to determine how much of the iodine was formed, the solution is titrated with sodium thiosulfate solution: solution colorless. I2 + 2S2O,2-→21- + S40,2- Percent composition To obtain percent composition by mass, use the equation given here: A bit of starch is added to the titration reaction, Starch is intensely blue in the presence of I2. The solution thus turns from deep blue to colorless at the reaction equivalence point. mass due to specific component x 100% percent composition total mass of the mixture • Fart A What is the percentage composition by mass of NaCIO in the bleach product? Express your answer to three significant figures and include the appropriate units. • View Available Hint(s) HA Pearson 90 11.22 aer
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