Im stuck on Mass of Cl in the origanal sample and average percent chloride Gravimetric Analysisof a Chloride SaltTrial ITrial 2Trial 30.308 80959Q 287Mass of sample031280,9650.289Mass of AgCl Hint:0.965-0.2893Da6760.315 80.969Mass of filter paper + AgClMass of filtcerрарerMass of Cl in original sample(show calculations)a167Hint: MCI+ AGNO3 → AgClis)+MNO(Mis the unknown metal in the original samplemass of cl in original sample =mass ofuin Agcl=0.676X35.5%3D1087355 X100%=0.1679Percent chloride in original sample(show calculations)53.5%Hint: C1% =0.16790.3128Average percent chloride (show calculations)Standard deviation (show calculations)Relative standard deviation expressedas a percent (show calculations)Doanyof your results differ from the mean by more than two standard deviations?Reported percent chloride%土No standard deiation!!!

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Answered: Gravimetric Analysis of a Chloride Salt…

Appl Of Ms Excel In Analytical Chemistry

2nd Edition

ISBN:9781285686691

Author:Crouch

Publisher:Crouch

Chapter4: Least-squares And Calibration Methods

Section: Chapter Questions

Problem 7P

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For Indirect Iodometric Analysis of Copper... ~0.0896g KIO3 necessary to consume 350mL of 0.1 M Na2S2O3, Na2S2O3 is stored in an amber glass bottle until ready for use. Primary Standard KIO3 has 2g of KI, 50mL of DI water, and 10 mL of 1.0M HCl is added then immediately titrated with Na2S2O3 until medium yellow or straw... then 5mL of starch indicator is added and titrated again until blue black color turns clear. Unknown CuO use 1.2G of Unknown, 20mL of HNO3 heated until sample dissolved, 25 mL of DI water added and boiled until clear light blue color, after cooling 1:1 NH3 added (~34.47 mL of NH4OH reagent) until permanent deep blue color amine complex, 2g of NH4HF2 added and swirled until dissolved, 3 g of KI is added then titrated immediately with Na2S2O3 until brown color of iodide is nearly gone (brown milk color), 2 g of KSCN and 3 mL of starch indicator is then added with titration continuing until disappearance of new blue black color. 4. Why is the starch indicator solution…
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