Volumetric Analysis of Nickel by Complexometric Method You are provided with a standatrd solution of 0.01N magnesium sulphate and an approximate solution of 0.01N EDTA.

1. DEPARTMENT OF CHEMISTRY
22CYL22 – CHEMISTRY LABORATORY
FOR MECHANICAL SYSTEMS
Prepared By
Krishnaveni K
Assistant Professor
Department of Chemistry
Kongu Engineering College,
Perundurai, Erode-638060
B.E – MTS- “A”
Volumetric Analysis of Nickel by
Complexometric Method

3. Short Procedure
Standardization of EDTA
(Standard MgSO4 Vs Unknown EDTA
Burette Solution: Unknown EDTA
Pipette Solution : 20 ml of standard MgSO4
Reagents to be added: 5ml of NH3 buffer
Condition : Room Temp.
Indicator : 2 drops of EBT
End Point : Colour changes from wine
red to steel blue
Standard
MgSO4
Colour
changes from
wine red to
steel blue
Standard
MgSO4 +
NH3
buffer
Standard
MgSO4 +
NH3
buffer +
EBT

5. Estimation of Nickel present in the given solution
(Standardized EDTA Vs Made up nickel solution
Burette Solution : Standardized EDTA
Pipette Solution : 20 ml of made up nickel solution
Reagents to be added : 5ml of NH3 buffer
Condition : Room Temp.
Indicator : 2 drops of mureoxide
End Point : Colour changes from yellow to violet
Unknown
Ni
solution
Made up Ni
solution
Colour
changes from
yellow to violet
Unknown Ni
solution made
up to 100ml
Made up
Ni solution
+ NH3
buffer
Made up Ni
solution
+ NH3 buffer +
Mureoxide

8. RESULT:
The amount of nickel present in the 100 ml of the
given solution--------------g

9. VIVA - VOCE QUESTIONS
1. What is EBT?
2. Abbreviate EDTA & EBT.
3. Why do we use ammonia buffer solution?
4. Name the oxidizing and reducing agent used in the experiment.
5. What is the principle behind in this experiment?
6. Name the indicator used in the experiment.
7. Write the end point for mureoxide indicator.

10. REFERENCES:
 1.Palanisamy P.N., Manikandan P., Geetha A.& Manjula Rani K,
“Chemistry lab Manual”, 2023.
1-Aug-23

11. 1-Aug-23
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YOU
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