Which description correctly matches the standard hydrogen electrode?
Correct answer A. Platinised platinum in 1 mol dm⁻³ H⁺, with H₂ gas at 1 atm and 298 K
Explanation
The SHE uses platinum coated with platinum black, dipped in 1 mol dm⁻³ H⁺ ions, with hydrogen bubbled at 1 atm at 298 K. Its potential is defined as 0.00 V.
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