KF is highly soluble in water. Write the formula unit equation for this reaction occurring in water: Ammonium fluoride and magnesium chloride are mixed to form magnesium fluoride and ammonium chloride. Ammonium fluoride is a white crystalline solid. Ammonium fluoride is the inorganic compound with the formula NH4F. Ammonium fluoride is soluble in water. Ammonium fluoride reacts with water to form hydrofluoric acid, a source of fluoride ions. 1. (Some websites give poor advice on this problem). For HF Unlike other halide ions, the fluoride ion is quite reactive, acting as a weak base and … In water, F Solubility in fluorine hydride, water, acetone, ammonia liquid, dimethyl sulfoxide, methanol, ethanol, . Ammonium fluoride is corrosive to aluminum. Ammonium fluoride is used in chemical analysis, in brewing, and as a preservative for wood. It crystallizes as small colourless prisms, having a sharp saline taste, and is highly soluble in water. Is ammonium fluoride acidic, or basic? It initially dissociates into K+ and F-. However, the F- further hydrolyzes with water to form HF. … More information about Ammonium fluoride (NH4F). Since HF is a weak acid (pKa = 3.17), it would rather exist as molecular HF than ionic F-. Ammonium fluoride is noncombustible. Hydrogen Fluoride, Hydrofluoric Acid, Ammonium Fluoride, and Ammonium Bifluoride Alternative Names HF HF is a water-soluble gas that forms hydrofluoric acid when dissolved in … Ka for hydrofluoric acid = 6.4 x 10-5 Kb for ammonia = 1.8x10-5 This isnt tough, let us firstly calculate their pK values. It is soluble in water.