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- Explain how can you have quantitative analysis by Polarography?
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- State the Ilkovic Equation and explain the terms involved.
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- Define and derive an expression for half wave potential? OR Write note in Half wave potential?
849 Views
- Why N2 gas is bubbled through experimental solution in Polarography?
1042 Views
- What is a Hump OR maximum in Polarographic wave and how it can be eliminated?
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By Sunil Bhardwaj
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In Polarography for each voltage applied across the cathode and anode, we measure the current in terms of micro amperes (\(\mu A\)). If we plot a graph of i vs V. The graph thus obtained is known as polarogram. The nature of the graph is S shaped, and is commonly called as Polarographic wave. The graph is not smooth and steady, but shows some periodic oscillations or fluctuations. These fluctuations are due to growth and fall of Hg drop. As soon as drop starts growing, more and more is the, reduction of metal ions on the surface of DME so more will be the magnitude of the current. When the size of drop is maximum, the deposition is maximum and the current is maximum. When the drop falls, the current falls to zero i.e. minimum. Again new drop formation takes place and current starts increasing. This trend is periodic.
- Explain the role of Capillary in Polarography?
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- Explain the principle of Polarography?
922 Views
- Explain the role of supporting electrolyte in Polarography?
760 Views
- How the mixture of metallic ions can be analyzed by Polarography?
806 Views
- State the applications and Limitations of Polarography?
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