Hydrofluoric acid is produced by treatment of the mineral fluorite (CaF2) with concentrated sulfuric acid. Less amount of fluorine gas is fed slowly to water, this will give hydrogen fluoride and oxygen gas. [5] HF interferes with nerve function, meaning that burns may not initially be painful. HF(aq) + H2O(l) <----> H3O+(aq) + F- (aq) The fact is that CaF2 is almost totally insoluble in water : solubility product Ksp = 3.9 x 10-11. a. 9780495784753, 9780495784760, 9780495784777, 9780495784784, 9780495784791, 9780495787433, 9780495787440, 9780538760881, 9780538776912, 9780538776929, 9781111779740. C. E. Housecroft and A. G. Sharpe "Inorganic Chemistry" (Pearson Prentice Hall, 2nd ed. Apatite sources typically contain a few percent of fluoroapatite, acid digestion of which releases a gaseous stream consisting of sulfur dioxide (from the H2SO4), water, and HF, as well as particulates. Initial 0.4 molecules of this acid in the water solution. HF(aq) + H2O(l) = H3O+(aq) + F- Hydrogen fluoride reacts with water to form an acidic solution. Learn how and when to remove this template message, "CDC – The Emergency Response Safety and Health Database: Systemic Agent: HYDROGEN FLUORIDE/ HYDROFLUORIC ACID – NIOSH", "A deadly rinse: The dangers of hydrofluoric acid", "Direct Potentiometric Determination of Fluoride Species by Using Ion-Selective Fluoride Electrode", "CDC – NIOSH Pocket Guide to Chemical Hazards – Hydrogen fluoride", https://en.wikipedia.org/w/index.php?title=Hydrofluoric_acid&oldid=988150706, Chemical articles with multiple compound IDs, Multiple chemicals in an infobox that need indexing, Pages using collapsible list with both background and text-align in titlestyle, Articles containing unverified chemical infoboxes, Articles needing additional references from November 2019, All articles needing additional references, Creative Commons Attribution-ShareAlike License, This page was last edited on 11 November 2020, at 11:55. Symptoms of exposure to hydrofluoric acid may not be immediately evident, and this can provide false reassurance to victims, causing them to delay medical treatment. A) write the equilibrium- constant expression for the dissociation of HF(aq) in water With Ka = 7.2 * 10^-4, A) write the equilibrium- constant expression for the dissociation of HF(aq) in water, B) calculate the molar concentration of H3O+ in a 0.4M HF solution A) write the equilibrium- constant expression for … hydrofluoric acid The chemical equation of hydrogen fluoride reacting with water is: `HF + H_2O harr H_3O^+ + F^-` [4], In addition to being a highly corrosive liquid, hydrofluoric acid is also a powerful contact poison. equilibrium is major species and are After separation from the solids, the gases are treated with sulfuric acid and oleum to afford anhydrous HF. In another episode, “Box Cutter”, Walter White and Jesse Pinkman use hydrofluoric acid to dissolve the body of Victor. F−. 1. Therefore, this reaction is a redox reaction. Ca(OH)2 + 2HF → CaF2↓ + 2H2O. species present in solutions. HF (aq) + OH-(aq) --> H2O(l) + F-(aq), A volume of 15ml of 0.4 M NaOH is added to 25ml of 0.4M HF aq solution. Because of the ability of hydrofluoric acid to penetrate tissue, poisoning can occur readily through exposure of skin or eyes, or when inhaled or swallowed. 2005), p. 170. © 2003-2020 Chegg Inc. All rights reserved. The corrosion process of the acid is both described and depicted as being fast enough to melt everything from metal and glass to the entire body of a sizable adult male in a matter of seconds, leaving only small amounts of tissue behind. So substituting to the equation is (A). This content was COPIED from BrainMass.com - View the original, and get the already-completed solution here! [26] Symptoms of HF exposure include irritation of the eyes, skin, nose, and throat, eye and skin burns, rhinitis, bronchitis, pulmonary edema (fluid buildup in the lungs), and bone damage.[27]. Also, the molecular formula for hydroflouric acid is HF, where F is the anion and H … Hydrofluoric acid is produced by treatment of the mineral fluorite (CaF2) with concentrated sulfuric acid.

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