Iodometric Analysis of Copper Content form Discarded PCBs. You are provided with a standard solution of 0.01N potassium dichromate and an approximate solution of 0.01N sodium thiosulphate

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

9. 27-Jul-23
THANK
YOU
THANKYOU