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一、考查溶解度概念例1已知t℃时,氯化钾的溶解度为40 g．下列说法错误的是( ) A．t℃时40 g氯化钾溶解在100 g水中形成饱和溶液B．t℃时100 g氯化钾饱和溶液中含有40 g氯化钾C．t℃时100 g水中最多溶解40 g氯化钾D．t℃时氯化钾的饱和溶液中溶质质量与溶剂质量的比为40：100 (据2006年江苏南通中考试题改编)解析：溶解度的概念中包含了一定的温度、100 g溶剂、溶质的溶解达到饱和状态、单位为克等四个要素．对备选答案逐项分析,可知答案为B．
First, examine the solubility concept Example 1 It is known that at t °C, the solubility of potassium chloride is 40 g. The following statement is wrong () A. 40 g of potassium chloride was dissolved in 100 g of water to form a saturated solution at t°C. When t °C 100 g of potassium chloride saturated solution contains 40 g of potassium chloride. Dissolve up to 40 g of potassium chloride in 100 g of water at t°C. The ratio of solute mass to solvent mass in a saturated solution of potassium chloride at t°C is 40:100 (according to the 2006 Jiangsu Nantong test question). Resolution: The concept of solubility includes the dissolution of a certain temperature, 100 g of solvent, and solute. To reach saturation, the unit is grams and other four elements. Analysis of the alternative answers one by one, we can see that the answer is B.