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Advanced Analytical Chemistry Virtual Lab
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Polarography - Determination of Unknown Concentration of Cadmium
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Polarography - Determination of Unknown Concentration of Cadmium
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Theory
Procedure
Self Evaluation
Simulator
Assignment
Reference
Feedback
1)
Which of the following the polarography different from voltammetry?
All the above.
Helps in determining the electrolysis action of solutions of electrooxidisable substances.
Helps in determining the electrolysis action of solutions of electroreducible substances.
The working electrode takes the form of a dropping mercury electrode.
2)
Characteristic features of a polarogram is/are
All the above.
Obtained by plotting the current versus potential response.
Difference exists between potential of reference electrode and DME.
Sigmoid in shape
3)
Limiting current in polarogram means
The current that exist in between the limiting diffusion plateau and the residual current.
The sum of the diffusion residual current.
Average diffusion current during the life of the drop.
Non faradaic current at the foot of the wave.
4)
Ilkovic equation can be best described by the equation:
id = 708 n D²/³ m¹/² t¹/⸠c
id = 708 n D¹/² m²/³ t¹/â¶ c
id = 78 n D²/³ m³/² t²/³ c
id = 78 n D²/³ m¹/² t¹/³ c
5)
In polarographic technique the formation of the new drop of the drop is controlled by
Capillary tube
Polarographic cell
Platinum electrode
Auxillary electrode
Cite this Simulator:
vlab.amrita.edu,. (2011). Polarography - Determination of Unknown Concentration of Cadmium. Retrieved 11 August 2026, from vlab.amrita.edu/?sub=2&brch=294&sim=687&cnt=3
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