Standard hydrogen electrode — Free Chemistry Illustration

Chemistry

Standard hydrogen electrode

Standard hydrogen electrode shown as a clean textbook laboratory schematic: a vertical platinum wire or slender strip attached to a small rectangular platinum foil electrode, partly immersed in a clear acidic aqueous solution inside a simple glass vessel. The platinum surface may appear silver-gray. Hydrogen gas is delivered to the electrode surface, optionally through a gas inlet tube, and is shown as fine small H2 bubbles clustered around and rising from the platinum. The solution is clear to pale blue, with a visible gas–electrode–solution interface and optional simple labels indicating H2, H+ ions, or standard conditions.

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