Cu2+ Na2S2O3 titration
Analia Sanchez・2 minutes read
The text discusses the process of using redox titration with sodium thiosulfate and potassium iodide to determine the concentration of copper sulfate, outlining the materials needed and specific steps to follow. By accurately recording volumes used in titrations and calculating moles of thiosulfate and copper reacted, the copper sulfate concentration was determined to be 0.1 molar.
Insights
- By conducting a redox titration using sodium thiosulfate and potassium iodide, one can accurately determine the concentration of copper sulfate in a solution.
- The process involves precise measurements using equipment like a buret, volumetric pipette, and white tile, followed by calculations based on the volumes of reagents used to find the molarity of copper sulfate at 0.1 molar.
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Recent questions
How is copper sulfate concentration calculated?
By performing a redox titration using sodium thiosulfate and potassium iodide.
What materials are required for the titration process?
You will need a buret, white tile, pipette, volumetric pipette, and pipette filler.
How do you accurately transfer copper sulfate solution?
Fill a volumetric pipette with 25 cm³ of the solution, rinse, and transfer carefully.
What is the initial volume needed for sodium thiosulfate titration?
Fill the burette with 0.1 molar sodium thiosulfate and record the initial volume.
How is the copper sulfate concentration calculated after titration?
Calculate the moles of thiosulfate used, moles of copper reacted with iodine, and the concentration as 0.1 molar.
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Summary
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Copper sulfate concentration through redox titration
- Redox titration to calculate copper sulfate concentration using sodium thiosulfate and potassium iodide
- Materials needed: buret, white tile, pipette, volumetric pipette, pipette filler
- Fill volumetric pipette with 25 cm³ of copper sulfate solution, rinse, and transfer accurately
- Fill burette with 0.1 molar sodium thiosulfate, record initial volume for titration
- Perform titrations, record volumes, disregard outlier, calculate average volume
- Calculate moles of thiosulfate used, moles of copper reacted with iodine, and copper sulfate concentration as 0.1 molar
