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山东梁山一中荣全祥指出离子方程式比化学方程式更能反映化学反应的实质,它不仅表示一定物质之间的反应,而且表示所有同一类型的离子反应。 课本通过硫酸钠溶液跟氯化钡溶液起反应生成氯化钠和白色的硫酸钡沉淀的例子写出了Ba~(2+)+SO_4~(2-)=BaSO_4↓的离子方程式,并说“任何可溶性钡盐跟硫酸或可溶性硫酸盐之间的反应都可以用上述这个离子方程式表示。”接着总结出书写离子方程式的步骤。 可溶性钡的弱酸盐溶液跟硫酸溶液可溶性钡盐的固体跟浓硫酸或可溶性硫酸盐的固体之
Shandong Liangshan Yizhong Rong Quanxiang pointed out that the ion equation can reflect the nature of the chemical reaction more than the chemical equation. It not only represents the reaction between certain substances, but also represents all the same type of ion reaction. The example of formulating the ion equation of Ba~(2+)+SO_4~(2-)=BaSO_4↓ by the example of the sodium sulfate solution reacting with the cesium chloride solution to produce sodium chloride and white barium sulfate precipitates and says “ The reaction between any soluble barium salt, sulfuric acid, or soluble sulfate can be expressed using the above ion equation.” The steps for writing the ion equation are then summarized. Soluble barium weak acid salt solution and sulfuric acid solution soluble barium salt solids with concentrated sulfuric acid or soluble sulphate solid