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If HF alone is electrolyzed, hydrogen forms at the cathode (positive part of the cell) and the fluoride ions remain in solution. After electrolysis, potassium fluoride remains in solution. [35] 2 HF 2 − → H 2 ↑ + F 2 ↑ + 2 F −. The modern version of the process uses steel containers as cathodes, while blocks of carbon are used as anodes.
Hydrogen fluoride does not boil until 20 °C in contrast to the heavier hydrogen halides, which boil between −85 °C (−120 °F) and −35 °C (−30 °F). [6] [7] [8] This hydrogen bonding between HF molecules gives rise to high viscosity in the liquid phase and lower than expected pressure in the gas phase.
They were the first company in Taiwan to produce hydrofluoric acid and fluoride. In 2021 they controlled 75% of the global oral care sodium fluoride market. [ 2 ]
Forging strong ties with copper and nickel miners in Zaire and Zambia, Mooney quickly became key supplier of the metals, helping maintain some of the highest levels of productivity in the cobalt specialty-chemicals industry. In the mid-1990s, for example, OM Group's sales per employee were more than double the industry average, at $850,000 ...
Steam reforming of natural gas is the most common method of producing commercial bulk hydrogen at about 95% of the world production [13] [14] of 500 billion m 3 in 1998. [15] At high temperatures (700–1100 °C) and in the presence of a metal-based catalyst , steam reacts with methane to yield carbon monoxide and hydrogen.
Hydrogen bonding amongst HF molecules gives rise to high viscosity in the liquid phase and lower than expected pressure in the gas phase. Hydrogen fluoride does not boil until 20 °C in contrast to the heavier hydrogen halides which boil between −85 °C and −35 °C (−120 °F and –30 °F).
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Hydrofluoric acid is a solution of hydrogen fluoride (HF) in water.Solutions of HF are colorless, acidic and highly corrosive.A common concentration is 49% (48-52%) but there are also stronger solutions (e.g. 70%) and pure HF has a boiling point near room temperature.