7 Molar mass of phosphoric acid: 97.994 g/mol 5). 2. Through the corrosion of metals, it may also form flammable and explosive hydrogen. When all three H+ ions are removed, the result is an orthophosphate ion PO43−, commonly called "phosphate". 4 Phosphoric acid has a pKa of 2.15 so it is not very strong but more so than acetic. Trichloroacetic acid has a pKa of 0.7 so is a strong acid. There’s a good chance it’s a nonelectrolyte, though it may be a weak electrolyte. Is phosphoric acid a strong acid? Wir und unsere Partner nutzen Cookies und ähnliche Technik, um Daten auf Ihrem Gerät zu speichern und/oder darauf zuzugreifen, für folgende Zwecke: um personalisierte Werbung und Inhalte zu zeigen, zur Messung von Anzeigen und Inhalten, um mehr über die Zielgruppe zu erfahren sowie für die Entwicklung von Produkten. 3. Specific gravity of phosphoric acid: 1.685@25C (water=1) 5). It is normally encountered as a colorless syrup of 85% concentration in water. Strong bases are strong electrolytes. And as to the pka of phosphoric acid, its detailed information is as below: pKa1: 2.12; ; pKa2: 7.21; pKa3: 12.67. The pure compound is a colorless solid. Please enter 6 - 20 characters (A-Z, a-z, 0-9 only). As to the problem of "phosphoric acid strong or weak", we will explain it below. Orthophosphoric acid also forms esters, called organophosphates.[14]. The phosphoric acid solution usually contains 23–33% P2O5 (32–46% H3PO4). HCl is -4 and H2SO4 is -3 although they are so strong that the values are extrapolated from other data. All three hydrogens are acidic, with dissociation constants pKa1 = 2.14, pKa2 = 7.20, and pKa3 = 12.37. Subject: Re: Strong or weak phosphoric acid? 5 We and our partners will store and/or access information on your device through the use of cookies and similar technologies, to display personalised ads and content, for ad and content measurement, audience insights and product development. Dies geschieht in Ihren Datenschutzeinstellungen. 1 It follows that, in water solutions, phosphoric acid is mostly dissociated into some combination of its three anions, except at very low pH. The equilibrium equations are: The dominant use of phosphoric acid is for fertilizers, consuming approximately 90% of production. Fluoroapatite is an alternative feedstock, in which case fluoride is removed as the insoluble compound Na2SiF6. pH; Strong acid . For other acids commonly called "phosphoric acid", see, Except where otherwise noted, data are given for materials in their, CS1 maint: multiple names: authors list (, "CAMEO Chemicals Datasheet - Phosphoric Acid", National Institute for Occupational Safety and Health, http://www.chemspider.com/Chemical-Structure.979.html, Ullmann's Encyclopedia of Industrial Chemistry, "Current EU approved additives and their E Numbers", "Dietary and pharmacologic management to prevent recurrent nephrolithiasis in adults: A clinical practice guideline from the American College of Physicians", "Colas, but not other carbonated beverages, are associated with low bone mineral density in older women: The Framingham Osteoporosis Study", National pollutant inventory – Phosphoric acid fact sheet, https://en.wikipedia.org/w/index.php?title=Phosphoric_acid&oldid=983063021, Pages using collapsible list with both background and text-align in titlestyle, Articles containing unverified chemical infoboxes, Creative Commons Attribution-ShareAlike License, 40–42.4 °C (104.0–108.3 °F; 313.1–315.5 K). [27], This article is about orthophosphoric acid. Key Takeaways. Sie können Ihre Einstellungen jederzeit ändern. . 1. 32 Store, Gelinweizhi, Minghang Road, Guandu District, Kunming City, Yunnan Province, China, Escrow ServiceMoreSecure Your Orders With escrow More Transparency,Less Uncertainty, Phosphoric acid application is covering every corner of the industry, such as in water treatment field, medicine and so on. As to the problem of "phosphoric acid strong or weak", we will explain it below. This is a slightly larger group than the strong acids, but you can identify the strong bases because they are metal hydroxides. The acidity of phosphoric acid is much weaker than sulfuric acid, hydrochloric acid, and nitric acid, while stronger than acetic acid and boric acid. Phosphoric acid hazards Due to its acidic nature, phosphoric acid should be handled with extreme care. Any element from the first two columns of the periodic table combined with a hydroxide is a strong base. It may be concentrated to produce commercial- or merchant-grade phosphoric acid, which contains about 54–62% P2O5 (75–85% H3PO4). Why? Phosphoric acid is commonly encountered in chemical laboratories as an 85% aqueous solution, which is a colourless, odourless, and non-volatile syrupy liquid. Für nähere Informationen zur Nutzung Ihrer Daten lesen Sie bitte unsere Datenschutzerklärung und Cookie-Richtlinie. [26] This was thought to be due to the presence of phosphoric acid, and the risk for women was found to be greater for sugared and caffeinated colas than diet and decaffeinated variants, with a higher intake of cola correlating with lower bone density.