A sample of a new cleaning product, "Joe's Famous Bleach Cleaner," with a mass of 61.0 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 0.430 M sodium thiosulfate, Na2S2O3, containing the ion S₂O3².A volume of 41.0 mL of sodium thiosulfate, the titrant, was needed to turn the solution colorless. 2- Percent composition To obtain percent composition by mass, use the equation given here: ▾ Part A percent composition = mass due to specific component total mass of the mixture x 100% What is the percentage composition by mass of NaClO in the bleach product? Express your answer to three significant figures and include the appropriate units.

A sample of a new cleaning product, "Joe's Famous Bleach Cleaner," with a mass of 61.0 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 0.430 M sodium thiosulfate, Na2S2O3, containing the ion S₂O3².A volume of 41.0 mL of sodium thiosulfate, the titrant, was needed to turn the solution colorless. 2- Percent composition To obtain percent composition by mass, use the equation given here: ▾ Part A percent composition = mass due to specific component total mass of the mixture x 100% What is the percentage composition by mass of NaClO in the bleach product? Express your answer to three significant figures and include the appropriate units.

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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Question

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+ +2II2 + Cl + H₂O
Then, to determine how much of the iodine was
formed, the solution is titrated with sodium
thiosulfate solution:
I2+2S2O3²21¯ +S406²-
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.
A sample of a new cleaning product, "Joe's Famous Bleach Cleaner," with a mass of 61.0 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 0.430 M sodium thiosulfate, Na2S2O3, containing the ion S₂O3².A
volume of 41.0 mL of sodium thiosulfate, the titrant, was needed to turn the solution colorless.
Percent composition
To obtain percent composition by mass, use the equation given here:
Part A
O
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)
μА
Value
Submit
percent composition =
Units
mass due to specific component
total mass of the mixture
?
x 100%

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