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Binary acids are certain molecular compounds in which hydrogen is combined with a second nonmetallic element. Examples: *HF *HCl *HBr *HI Their strengths depend on the solvation of the initial acid, the H-X bond energy, the electron affinity energy of X, and the solvation energy of X. Observed trends in acidity correlate with bond energies, the weaker the H-X bond, the stronger the acid. For example, there is a weak bond between hydrogen and iodine in hydroiodic acid, making it a very strong acid. Binary acids are one of two classes of acids, the second being the oxyacids, which consist of a hydrogen, oxygen, and some other element. The names of binary acids begin with ''hydro-'' followed by the name of the other element modified to end with ''-ic''. Some texts contrast two types of acids. 1. binary acids or ''hydracids'' and 2. oxyacids that contain oxygen. ==References== *Hill; Petrucci; McCreary; Perry. General Chemistry, Fourth Edition. New Jersey, Pearson Prentice Hall. 2005 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「Binary acid」の詳細全文を読む スポンサード リンク
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