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Physical Chemistry

Use of Nernst Equation

Science > Chemistry > Electrochemistry > Use of Nernst Equation In this article, we shall study the use of the Nernst equation to find e.m.f. of cell and electrodes. Convention Followed While Calculation of Cell Potential (e.m.f.): In the symbolic representation of the cell, the right-hand side electrode is the cathode (positive electrode) and the […]

Categories
Physical Chemistry

Concept of Electrode Potential: Nernst Theory

Science > Chemistry > Electrochemistry > Nernst Theory In this article, we shall study the Nernst theory of electrode potential, Nernst equation, and its use. Single Electrode or Half cell or Electrode Couple: A single electrode or half cell or electrode couple is produced when a metal is dipped in the solution of its own […]

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Physical Chemistry

Types of Electrodes

Science > Chemistry > Electrochemistry > Types of Electrodes In this article, we shall study different types of electrodes, their representation, writing cell reactions, and finding e.m.f. of a cell. There are four types of electrodes Gas electrodes Metal–sparingly soluble metal salt electrodes Metal – metal ion electrodes Redox Electrodes Gas Electrodes: A gas electrode […]

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Physical Chemistry

Reference Electrodes

Science > Chemistry > Electrochemistry > Reference Electrodes The electrode whose potential is arbitrarily fixed or is exactly known at a given constant temperature is known as a reference electrode. Using reference electrodes unknown potential of any other single electrode can be found out e.g. two commonly used reference electrodes are standard hydrogen electrode (SHE) […]

Categories
Physical Chemistry

Representation of Electrochemical Cell

Science > Chemistry > Electrochemistry > Representation of Electrochemical Cell In this article, we shall study the representation of cell using conventions on paper. We shall also discuss the construction and working of the salt bridge. Electrochemical (Voltaic or Galvanic) cell consists of two half cells. In one half-cell, an oxidation reaction takes place and […]