IGNOU MCH 4 2017 - Derive the Nernst expression for galvanic cell.

Question

Derive the Nernst expression for galvanic cell.

28 Mar 2017

Answer :

Word Count : 333

The Nernst equation describes the relationship between the electromotive force (EMF) of a galvanic cell and the concentrations of the participating electrochemical species. It is an essential equation in electroanalytical chemistry and is named after the German chemist Walther Nernst. The Nernst equation can be derived for a galvanic cell as follows:

Consider a simple galvanic cell consisting of two half-cells connected by a salt bridge. Each half-cell has an electrode immersed in a solution containing the corresponding electrolyte. One half-cell contains the oxidation half-reaction, and the other contains the reduction half-reaction. The overall cell reaction can

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