a standard reference electrode with a potential of zero, used in pH measurements, consisting of a platinum-black surface covered with hydrogen bubbles.
- Hydrogen embrittlement
/ɪmˈbrɪtəlmənt/ noun 1. (engineering) the weakening of metal by the sorption of hydrogen during a pickling process, such as that used in plating
noun 1. a colorless corrosive gas, HF, the anhydride of hydrofluoric acid, used chiefly as a catalyst and in the fluorination of hydrocarbons. noun 1. a colourless poisonous corrosive gas or liquid made by reaction between calcium fluoride and sulphuric acid: used as a fluorinating agent and catalyst. Formula: HF 2. an aqueous solution of […]
noun 1. a colorless gas, HI, having a suffocating odor: the anhydride of hydriodic acid. noun 1. a colourless poisonous corrosive gas obtained by a catalysed reaction between hydrogen and iodine vapour: used in making iodides. Formula: HI 2. an aqueous solution of this gas; hydriodic acid
noun 1. ionized hydrogen of the form H + , found in aqueous solutions of all acids. noun 1. an ionized hydrogen atom, occurring in plasmas and in aqueous solutions of acids, in which it is solvated by one or more water molecules; proton. Formula: H+ 2. an ionized hydrogen molecule; hydrogen molecular ion. Formula: […]