electrochemical testing

Electrochemical Series - Different electrodes have different standard electrode potentials. The standard electrode potentials (E) for some electrodes are negative, while for some others E values are positive. The E values of many electrodes have been measured and their standard reduction ..

Spontaneous redox reactions are the metal displacement reactions. Therefore such reactions have been used for producing electricity. This is done by carrying out these reactions in specially designed units called electrochemical cells. An electrochemical cell is a device used t..

Different electrodes have different standard electrode potentials. The standard electrode potentials (E) for some electrodes are negative, while for some others E values are positive. The E values of many electrodes have been measured and their standard reduction potentials are arranged in a ..

The fact that chemical reactions produce electrical effects was discovered accidentally in 1791 by Luigi Galwani, professor of anatomy at the University of Bologna, Italy. He found that an electric current flowed across two dissimilar metals between which was a moist substance. In his case, the moi..

. When a metallic wire connects the two electrodes, the electrons flow from the negatively charged electrode to the positively charged electrode. Thus, in an indirect redox reaction, electrons flow in a particular direction through an external conducting wire connecting the two electrodes. This flo..

Here, each of the reactant is taken in a separate container in contact with a rod/sheet of a metallic-conductor (electronic conductor) called an electrode. Electrical contact between the two reactants is established by placing a conducting salt bridge in-betwee..

Applications of Electrochemical Series - The main applications of the electrochemical series a..

An electrochemical cell is a device in which oxidation and reduction reactions take place indirectly and the decrease in the potential energy is converted into electrical energ..

Construction and Working of an Electrochemical Cell - A zinc rod is dipped in ZnSO 4 solution and a Cu rod in CuSO 4 solution. The Zn rod is externally connected to the copper rod through a rheostat, a galvanometer and a plug key. fig 5.10 The two aqueous solutions are interlinked through..

In general, the electrode at which reduction takes place is written on the RHS of the salt bridge and the electrode at which oxidation takes place is written on the LHS of the salt bridge. The salt bridge linking the aqueous solutions is represented by two vertical parallel lines having ions on bo..