Which of the following are application of Electrogravimetric analysis?

Which of the following are application of Electrogravimetric analysis?

Applications: It is used for the determination of concentration of chemical elements very accurate and precisely in quantitative analysis. In a solution the different species are separated by selectively plating out and removing out. It is used in electrochemical methods for removing interferences.

What is the difference between Coulometry and electrogravimetry?

In electrogravimetry, the product is weighed as a deposit on one of the electrodes. In coulometry, the quantity of electricity needed to complete the electrolysis is measured as coulombs. Both the methods are quite sensitive, rapid and accurate.

What is the principle of Coulometry?

The main principle involved in the coulometric titration is the generation of the titrant by electrolysis. Then a large amount of titrant solution is added to the sample solution. Then the sample solution is electrolysed at the anode surface. As the electrolysis proceeds, the anode potential is increased.

What electrode is coulometry?

A three-electrode potentiostat is used to set the potential in controlled potential coulometry. The working electrode is either platinum or liquid mercury electrode. The auxiliary electrode is very often made of platinum and is separated by a salt bridge from the analytical solution.

Why do we use potentiostat?

A potentiostat is an analytical instrument designed to control the working electrode’s potential in a multiple electrode electrochemical cell. The potentiostat contains many internal circuits that allow it to function in this capacity. The circuits generate and measure potentials and currents.

What is amperometry principle?

The principle of amperometric sensor is based on measuring current generated by enzymatic or bioaffinity reaction at the electrode surface, at a constant working potential with respect to the reference electrode.