Chemical Knowledge Share – Superacids

2018-10-26View Original

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Acids or acidic media with an acidity greater than that of 100% sulfuric acid are generally referred to as superacids (or ultra-strong acids). For example, fluorsulfonic acid (HSO3F) is an important acidic solvent; its acidity is stronger than that of any pure acid, except for pyrosulfuric acid (H2S2O7). If antimony pentafluoride (SbF5) or a mixture of antimony pentafluoride and sulfur trioxide is added to fluorosulfuric acid, a more acidic solvent can be obtained. Superacids possess an extremely strong protonation ability and very high acidity, generally being 106 to 1010 times stronger than inorganic acids. If the acidity function H0 is used to measure the acidity of superacids, it can also be said that any acidity function H0

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Chemical Knowledge Share – Superacids

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