单词 | hydrogen electrode |
释义 | hydrogen electrode [`hī·drǝ·jǝn i`lek´trōd] PHYSICAL CHEMISTRY A noble metal (such as platinum) of large surface area covered with hydrogen gas in a solution of hydrogen ion saturated with hydrogen gas; metal is used in a foil form and is welded to a wire sealed in the bottom of a hollow glass tube, which is partially filled with mercury; used as a standard electrode with a potential of zero to measure hydrogen ion activity. |
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