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Fluoroantimonic acid is a mixture of hydrogen fluoride and antimony pentafluoride, containing various cations and anions (the simplest being H 2 F + and Sb F − 6).This mixture is a superacid that, in terms of corrosiveness, is trillions of times stronger than pure sulfuric acid when measured by its Hammett acidity function.
In chemistry, a superacid (according to the original definition) is an acid with an acidity greater than that of 100% pure sulfuric acid (H 2 SO 4), [1] which has a Hammett acidity function (H 0) of −12.
Carborane acids H(CXB 11 Y 5 Z 6) (X, Y, Z = H, Alk, F, Cl, Br, CF 3) are a class of superacids, [1] some of which are estimated to be at least one million times stronger than 100% pure sulfuric acid in terms of their Hammett acidity function values (H 0 ≤ –18) and possess computed pK a values well below –20, establishing them as some of the strongest known Brønsted acids.
The bodies of water absorb around 90% of the Earth's accumulated heat and 23% of the carbon dioxide emissions from human activity. ... The ocean is also now its most acidic in at least 26,000 ...
STORY: Oceans reached their hottest and most acidic levels on record in 2021, and melting ice sheets pushed sea levels to new heights, the World Meteorological Organization said on Wednesday (May 18).
Ocean acidification is the ongoing decrease in the pH of the Earth's ocean. Between 1950 and 2020, the average pH of the ocean surface fell from approximately 8.15 to 8.05. [ 2 ] Carbon dioxide emissions from human activities are the primary cause of ocean acidification, with atmospheric carbon dioxide (CO 2 ) levels exceeding 422 ppm (as of ...
Acidic foods, such as citrus fruits, tomatoes, and vinegar, typically have a pH below 4.6 [34] with sharp and tangy taste, while basic foods taste bitter or soapy. [35] Maintaining the appropriate pH in foods is essential for preventing the growth of harmful microorganisms . [ 34 ]
The more acidic the waters are, the more recorded Fe, Al, and Si elemental compounds. Conversely, waters with pH’s higher than 4 are nearly void of HCO 3 − . The amount of Fe in the waters has a positive correlation with salinity, with the higher the salinity of the water the higher Fe value is present.
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