用精密量热系统测定了Ｍｇ（ＩＯ３）２·４Ｈ２Ｏ在２９８．２Ｋ时的标准生成焓，其值为－２０７８．５ＫＪ　ｍｏｌ－１。 The standard enthalpy of formation of Mg (IO3) 2.4H2O at 298.2K was me......