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Phosphoric acid (orthophosphoric acid, monophosphoric acid or phosphoric(V) acid) is a colorless, odorless phosphorus-containing solid, and inorganic compound with the chemical formula H 3 P O 4. It is commonly encountered as an 85% aqueous solution , which is a colourless, odourless, and non- volatile syrupy liquid.
Since the ends are condensed, its formula has one less H 2 O (water) than tripolyphosphoric acid. The general formula of a phosphoric acid is H n−2x+2 P n O 3n−x+1, where n is the number of phosphorus atoms and x is the number of fundamental cycles in the molecule's structure; that is, the minimum number of bonds that would have to be ...
Phosphate (PO 4 3–) and phosphoric acid (H 3 PO 4) are not present in significant amounts. Thus millimoles per liter (mmol/L) are often used to denote the phosphate concententration. If milligrams per decililiter (mg/dL) is used, it often denotes the mass of phosphorus bound to phosphates, but not the mass of some individual phosphate.
Plus, many sodas are acidic themselves (partially because of the phosphoric acid they contain), which can further erode your tooth enamel, the outermost protective layer of your teeth. This ...
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Common nonvolatile acids in humans are lactic acid, phosphoric acid, sulfuric acid, acetoacetic acid, and beta-hydroxybutyric acid. Humans produce about 1–1.5 mmoles of H + per kilogram per day. [1] Most nonvolatile acids are excreted by the kidneys. Lactic acid is usually completely metabolized by the body, and is thus not excreted from the ...
A major appeal of this route is the low cost of phosphoric acid compared to phosphorus oxychloride. OP(OH) 3 + ROH → OP(OH) 2 (OR) + H 2 O. P 2 O 5 is the anhydride of phosphoric acid and acts similarly. The reaction yields equimolar amounts of di- and monoesters with no phosphoric acid.
At pH 1 or lower, the phosphoric acid is practically undissociated. Around pH 4.7 (mid-way between the first two pK a values) the dihydrogen phosphate ion, [H 2 PO 4] −, is practically the only species present. Around pH 9.8 (mid-way between the second and third pK a values) the monohydrogen phosphate ion, [HPO 4] 2−, is the only species ...