Home
Project
Workshop
Nodal Centres
Apply for Nodal Centre Program
Nodal Centre List
Free online demo
Nodal Centre Inaugurations
Unique Login ID
News & Events
Publications
Survey
Faculty Survey
Student Survey
Contact us
Login
.
you are here->
home
->
Chemical Sciences
->
Advanced Analytical Chemistry Virtual Lab
->
Polarography - Determination of Unknown Concentration of Cadmium
.
.
Polarography - Determination of Unknown Concentration of Cadmium
.
.
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.
The working electrode takes the form of a dropping mercury electrode.
Helps in determining the electrolysis action of solutions of electroreducible substances.
2)
Characteristic features of a polarogram is/are
Difference exists between potential of reference electrode and DME.
All the above.
Obtained by plotting the current versus potential response.
Sigmoid in shape
3)
Limiting current in polarogram means
Non faradaic current at the foot of the wave.
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.
4)
Ilkovic equation can be best described by the equation:
id = 78 n D²/³ m³/² t²/³ c
id = 708 n D¹/² m²/³ t¹/⁶ c
id = 708 n D²/³ m¹/² t¹/⁸ 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
Auxillary electrode
Capillary tube
Platinum electrode
Polarographic cell
Cite this Simulator:
vlab.amrita.edu,. (2011). Polarography - Determination of Unknown Concentration of Cadmium. Retrieved 24 April 2024, from vlab.amrita.edu/?sub=2&brch=294&sim=687&cnt=3
.....
.....
.....
Copyright @ 2024 Under the NME ICT initiative of MHRD
Powered by
Amrita
Virtual Lab Collaborative Platform
[ Ver 00.13. ]