Standard Hydrogen Electrode | Construction & Working |

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The Standard Hydrogen Electrode (SHE) serves as a benchmark in electrochemistry, providing a reference point for measuring electrode potentials. Consisting of a platinum electrode immersed in a solution with hydrogen ions at unit activity and bubbling hydrogen gas, the SHE boasts several key features:

Reference Standard: SHE establishes a baseline for measuring electrode potentials, with its potential defined as exactly 0 volts at all temperatures.

Universal Comparisons: Its simplicity and reproducibility make it an invaluable tool for comparing the reactivity and electrochemical behavior of different substances.

Theoretical Significance: SHE's equilibrium reaction, involving the reduction of hydrogen ions to hydrogen gas, aligns with fundamental principles of thermodynamics and kinetics, facilitating theoretical analyses.

Practical Applications: Despite its theoretical underpinnings, SHE finds practical use in various fields, from corrosion studies to the determination of standard electrode potentials for half-cell reactions.

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