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在学习人教版九年级化学下册碱的化学性质时,涉及碱与非金属氧化物二氧化碳的反应。其中氢氧化钙与二氧化碳的反应,我们比较熟悉,因为在前面学习二氧化碳的检验时已经知道,能够观察到明显的实验现象:澄清的石灰水变浑浊。然而氢氧化钠与二氧化碳的反应,教材中只是以此类推给出相关的反应方程式,但并没有设计相关的实验。于是,李明就提出了问题:氢氧化钠溶液与二氧化碳反
When studying the chemical nature of the ninth grade chemistry of the PEP, it involves the reaction of alkali with non-metal oxides of carbon dioxide. Among them, the reaction of calcium hydroxide with carbon dioxide, we are familiar with, because in the previous study of carbon dioxide has been known to be able to observe the obvious experimental phenomenon: clarified lime water becomes turbid. However, the reaction of sodium hydroxide and carbon dioxide, the textbook is only so analogous to give the relevant reaction equation, but did not design the relevant experiments. So, Li Ming raised the question: sodium hydroxide solution and carbon dioxide