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例题室温下,氢氧化钠的溶解度为22g,将多少克金属钠投入100g水中,可获得该温度下的饱和溶液.解析设投入100g水中的金属钠的质量为xg.2Na+2H2O=2NaOH+H2↑463680218401x(18)/(23)x(40)/(23)x1/(23)x
Example At room temperature, the solubility of sodium hydroxide is 22g, and how many grams of metal sodium is put into 100g of water to obtain a saturated solution at this temperature. Analytical basis The mass of metallic sodium input into 100g of water is xg.2Na+2H2O=2NaOH+H2 ↑ 463680218401x(18)/(23)x(40)/(23)x1/(23)x