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翻訳と辞書　辞書検索 [ 開発暫定版 ] スポンサード リンク Europium(III) chloride ： ウィキペディア英語版 Europium(III) chloride |Section2= |Section4= |Section5= }} Europium(III) chloride is an inorganic compound with the formula EuCl3. The anhydrous compound is a yellow solid. Being hygroscopic it rapidly absorbs water to form a white crystalline hexahydrate, EuCl3·6H2O, which is colourless. The compound is used in research. ==Preparation== Treating Eu2O3 with aqueous HCl produces hydrated europium chloride (EuCl3·6H2O). This salt cannot be rendered anhydrous by heating. Instead one obtains an oxychloride. Anhydrous EuCl3 is often prepared by the "ammonium chloride route," starting from either Eu2O3〔 〕 or hydrated europium chloride (EuCl3·6H2O). These methods produce (NH4)2(): ::10 NH4Cl + Eu2O3 → 2 (NH4)2() + 6 NH3 + 3 H2O ::EuCl3·6H2O + ''2'' NH4Cl → (NH4)2() + 6 H2O The pentachloride decomposes thermally according to the following equation: :: (NH4)2() → 2 NH4Cl + EuCl3 The thermolysis reaction proceeds via the intermediary of (NH4)(). 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「Europium(III) chloride」の詳細全文を読む スポンサード リンク 翻訳と辞書 : 翻訳のためのインターネットリソース Copyright(C) kotoba.ne.jp 1997-2016. All Rights Reserved.