22CYL12 & Chemistry laboratory for computer Systems (IT-A - Cu).ppt
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The document outlines an iodometric analysis procedure for determining the copper content in discarded PCBs, prepared by Krishnaveni K from the Department of Chemistry at Kongu Engineering College. It details the chemical reactions involved, including the use of standard K2Cr2O7 and other reagents, observing color changes as indicators of the analysis. The results indicate the amount of copper present in a specific volume of solution.
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22CYL12 & Chemistry laboratory for computer Systems (IT-A - Cu).ppt
- 1. DEPARTMENT OF CHEMISTRY 22CYL12 – CHEMISTRY LABORATORY FOR COMPUTER SYSTEMS Prepared By Krishnaveni K Assistant Professor Department of Chemistry Kongu Engineering College, Perundurai, Erode-638060 B.TECH – IT- “A” Iodometric Analysis of Copper Content form Discarded PCBs
- 3. Standard K2Cr2O7 Standard K2Cr2O7 + dil.H2SO4 Standard K2Cr2O7 + dil.H2SO4 + KI Standard K2Cr2O7 + dil.H2SO4 + KI + Starch Disappearance of blue colour and appearance of Faint green colour
- 5. Made up Cu Solution Cu solution + NH4OH Cu solution + NH4OH + CH3COOH Cu solution + NH4OH + CH3COOH + KI Cu solution + NH4OH + CH3COOH +KI+ Starch Disappearance of blue colour and appearance of milky white precipitate
- 7. RESULT: The amount of copper present in 100 ml of the given solution is ---------------g
- 8. REFERENCES: 1.Palanisamy P.N., Manikandan P., Geetha A.& Manjula Rani K, “Chemistry lab Manual”, 2023. 27-Jul-23