Fluorosulfuric acid (IUPAC name: sulfurofluoridic acid) is the inorganic compound with the chemical formula HSO3F. It is one of the strongest acids commercially available. It is a tetrahedral molecule and is closely related to sulfuric acid, H2SO4, substituting a fluorine atom for one of the hydroxyl groups.

Attempts to concentrate the solutions of sulfurous acid simply reverses the equilibrium, producing sulfur dioxide and water vapor. A clathrate with the formula 4SO2·23H2O has been crystallised. It decomposes above 7 °C.

Jan 14, 2010 · Protonated magic acid: Fluorodihydroxyoxosulfonium hexafluoroantimonate, [H2SO3F]+[SbF6]−, is formed when SO3 reacts at −35 °C with the superacid HF/SbF5. The in situ formed HSO3F (see graphic) is pr...

Aug 19, 2014 · $$\ce{2SbF5 + 2 HF <=> H2F+ + [Sb2F11]- }$$ $\ce{H2F+}$ is even stronger acid than $\ce{H2SO3F+}$ - it can protonate water twice, even if transiently.

Magic acid (FSO3H·SbF5) is a superacid consisting of a mixture, most commonly in a 1:1 molar ratio, of fluorosulfuric acid (HSO3F) and antimony pentafluoride (SbF5).

氟硫酸，又名氟磺酸，是一种 无机化合物，化学式为FHO3S。 是一种含氟的强酸，属于 超强酸。 可以把它看作硫酸与氢氟酸的酐，可溶于极性有机溶剂（例如 硝基苯，乙酸和乙酸乙酯），但难溶在非极性溶剂如烷烃。 反映其强酸性，它溶解几乎所有有机物包括弱质子受体。 氟硫酸的迅速水解就产生H2SO4与HF。 主要用在分支烷与 芳香化合物 的烷基化反应，又能催化单烯的聚合，制造有用的高分子。 溶解性：溶于水，溶于乙酸、硝基苯、乙醚，不溶于 四氯化碳 、 二硫化碳 …

For example, water is H 2 O, meaning it contains two hydrogen atoms and one oxygen atom. Find atomic masses: look up the atomic masses of each element present in the compound. The atomic mass is usually found on the periodic table and is given in atomic mass units (amu).

Magic Acid, H2SO3F+, is one of the inorganic superacids. This extremely strong acid has a pKa of 20 and is strong enough to protonate saturated alkanes to form carbonium ions. Magic Acid is made by mixing antimonypentafluoride (SbF55) and fluorosulphonic acid.

Sulfurous acid appears as a colorless liquid with a pungent burning sulfur odor. Corrosive to metals and tissue. Sulfurous acid is a sulfur oxoacid. It is a conjugate acid of a hydrogensulfite. It is a tautomer of a sulfonic acid. NA has been reported in Homo sapiens, Trypanosoma brucei, and Terminalia chebula with data available.

H2SO3F: This species is formed due to the reaction between HSO3F and SbF5. It is a strong acid and is responsible for the superacidity of the SbF5- HSO3F system. - HSO3F: Although HSO3F is a strong acid, it is not responsible for the superacidity of the SbF5- HSO3F system. - SbF5: SbF5 is a Lewis acid and can act as a catalyst in many reactions.