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|Section2= |Section3= |Section4= |Section7= |Section8= }} Dichlorine monoxide, is an inorganic compound with the molecular formula Cl2O. It was first synthesised in 1834 by Antoine Jérôme Balard, who along with Gay-Lussac also determined its composition. In older literature it is often referred to as chlorine monoxide, which can be a source of confusion as that name now refers to the neutral species ClO. At room temperature it exists as a brownish-yellow gas which is soluble in both water and organic solvents. Chemically, it is a member of the chlorine oxide family of compounds, as well as being the anhydride of hypochlorous acid. It is a strong oxidiser and chlorinating agent. ==Preparation== The earliest method of synthesis was to treat mercury(II) oxide with chlorine gas. However this method is expensive, as well as highly dangerous due to the risk of mercury poisoning. :2 Cl2 + 2 HgO → HgCl2 + Cl2O A safer and more convenient method of production is the reaction of chlorine gas with hydrated sodium carbonate, at 20-30°C. :2 Cl2 + 2 Na2CO3 + H2O → Cl2O + 2 NaHCO3 + 2 NaCl :2 Cl2 + 2 NaHCO3 → Cl2O + 2 CO2 + 2 NaCl + H2O This reaction can be performed in the absence of water but requires heating to 150-250°C; as dichlorine monoxide is unstable at these temperatures it must therefore be continuously removed to prevent thermal decomposition. :2 Cl2 + Na2CO3 → Cl2O + CO2 + 2 NaCl Dichlorine monoxide can also be formed by the reaction of calcium hypochlorite with carbon dioxide :Ca(ClO)2 + CO2 → CaCO3 + Cl2O 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「dichlorine monoxide」の詳細全文を読む スポンサード リンク
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