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一、试题(2007年全国Ⅰ卷第27题)A、B、C、D、E 均为可溶于水的固体,组成它们的离子有:阳离子:Na~+、Mg~(2+)、Al~(3+)、Ba~(2+)阴离子:OH~-、Cl~-、CO_3~(2-)、SO_4~(2-)、HSO_~4-分别取它们的水溶液进行实验,结果如下:①A溶液与 B 溶液反应生成白色淀淀,沉淀可溶于 E溶液;②A溶液与 C 溶液反应生成白色沉淀,沉淀可溶于 E溶液;③A溶液与 D 溶液反应生成白色沉淀,沉淀可溶于
First, the test questions (2007 national volume I question 27) A, B, C, D, E are water-soluble solids, composed of their ions: cations: Na ~ +, Mg ~ (2+), Al~(3+) and Ba~(2+) anions: OH~-, Cl~-, CO~3~(2-), SO~4~(2-), HSO~~4- were taken from their aqueous solutions and the results were obtained. As follows: 1A solution reacts with B solution to form white lake, precipitation can be dissolved in E solution; 2A solution reacts with C solution to form white precipitate, precipitate can be dissolved in E solution; 3A solution reacts with D solution to form white precipitate, precipitate is soluble in