Standard hydrogen electrode
Standard hydrogen electrode
Formula
E° (SHE) = 0 V by definition
Real World
When NPL (National Physical Laboratory) calibrates reference electrodes used in corrosion testing of North Sea pipelines, every measurement is ultimately traceable back to the standard hydrogen electrode at 0 V.
Exam Focus
State all three standard conditions (298 K, 1 atm H₂, 1 mol dm⁻³ H⁺) when describing the SHE — examiners award a mark per condition.
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