Accurately weigh out about 6g copper(ii) sulfate crystals into a weighing boat.Use the copper(ii) sulfate crystals to make up 250cm3 of standardized copper (ii) sulfate solutionPipette 25cm3 of this solution into a conical flaskAdd 1.5g potassium iodide and swirl thoroughlyTitrate this solution with standard 0.1 moldm-3 Na2S2O3 in a burette. When the iodine color fades, add 1 cm3 starch indicator.Use your titration data below to calculate the percentage by mass of copper in the copper(ii) sulfate crystals.

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Fundamentals Of Analytical Chemistry

9th Edition

ISBN:9781285640686

Author:Skoog

Publisher:Skoog

Chapter31: Introduction To Analytical Separations

Section: Chapter Questions

Problem 31.19QAP

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Accurately weigh out about 6g copper(ii) sulfate crystals into a weighing boat.
Use the copper(ii) sulfate crystals to make up 250cm³ of standardized copper (ii) sulfate solution
Pipette 25cm³ of this solution into a conical flask
Add 1.5g potassium iodide and swirl thoroughly
Titrate this solution with standard 0.1 moldm^-3 Na₂S₂O₃ in a burette. When the iodine color fades, add 1 cm³ starch indicator.
Use your titration data below to calculate the percentage by mass of copper in the copper(ii) sulfate crystals.

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