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我们知道,盐酸是酸性的,氢氧化钠是碱性的。监酸之所以酸性,是因为它在水中离解后有氢离子产生。氢氧化钠之所以碱性,是因为它在水中离解后有氢氧离子产生。实际上,水本身也能够离解出氢离子和氢氧离子,不过水的离解度很小很小,纯水在22℃的时候,每10,000.000升水仅有1克分子(即18克)水离解成离子,也就是说有1克分子水离解生成1克离子氢(即1克)及1克离子氢氧根(即17克)。我们用化学方程式来表示:
We know that hydrochloric acid is acidic and sodium hydroxide is alkaline. The acidity of the acid monitor is due to hydrogen ions generated after dissociation in water. The reason why sodium hydroxide is alkaline is because it produces hydroxide ions after dissociation in water. In fact, water itself can also dissociate hydrogen ions and hydroxide ions, but the degree of dissociation of water is very small and small. At 22°C, pure water dissociates into only 1 gram (ie 18 grams) of water per 10,000.000 liters of water. The ions, that is, 1 gram of water, dissociate to produce 1 gram of ionic hydrogen (ie, 1 gram) and 1 gram of ionized hydroxide (ie, 17 grams). We use chemical equations to represent: