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|Section2= |Section3= }} Bifluoride is an inorganic anion with the chemical formula HF (also written ()−). It contributes no color to bifluoride salts. Salts of bifluoride are used to etch glass. ==Acid-base properties and production== Bifluoride undergoes the typical chemical reactions of a weak acid. Upon treatment with a standard acid, it converts to hydrofluoric acid and a metal salt. Oxidation of bifluoride gives fluorine. When heated, bifluoride salts decompose to produce fluoride salts and hydrogen fluoride: :()− HF + F− Bifluoride protonates to give hydrogen fluoride: :HF + H+ 2 HF Because of this capture of a proton (H+), bifluoride has basic character. Its conjugate acid is the reactive intermediate, μ-fluoro-fluorodihydrogen (H2F2), which subsequently dissociates to become hydrogen fluoride. In solution, most bifluoride ions are dissociated. : + 2 HF + Bifluoride salts arise by treatment of hydrogen fluoride with base: :HF + F− → ()− 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「bifluoride」の詳細全文を読む スポンサード リンク
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