2022年2017中考化学专项练习溶解度 .pdf

溶解度一、选择题1如图是甲、乙两种固体物质（不含结晶水）的溶解度曲线，下列叙述错误的是（）At1时，甲、乙两种物质的饱和溶液中溶质质量一定相等 Bt2时，甲的溶解度大于乙的溶解度C甲中含有少量乙，可以用冷却热饱和溶液的方法提纯甲Dt2时，向60g 甲固体中加入50g 水，充分搅拌后能得到 105g 溶液2如图是硝酸钾和氯化钠的溶解度曲线图30时，分别将30g 硝酸钾和氯化钠放入100g 水中，充分溶解下列结论中，不正确的是（）A 两种溶液中溶质的质量分数相等B通常情况下，采取降温的方法，能将两种溶液都变成饱和溶液C若将硝酸钾溶液降温到20，溶液中溶质和溶剂的质量比为3：10 D若将硝酸钾溶液变为10时的饱和溶液，溶液中溶质的质量分数一定减小3固体物质R在水、乙醇两种溶剂中的溶解度曲线如图所示下列说法正确的是（）A 物质 R在水中的溶解度大于在乙醇中的溶解度Bt1时，物质R在水中和在乙醇中的溶解度都为2g C 将 t2时物质R在水中的饱和溶液降温至t1，有晶体析出D 物质 R在水中的溶解度与在乙醇中的溶解度相比较，前者受温度变化影响很小4甲乙两种物质的溶解度曲线如图所示，现分别将100g 甲、乙的饱和溶液从t2降至t1，对于降温后的甲乙溶液下列叙述正确的是（）A甲乙都是饱和溶液 B 所含溶剂质量：甲乙C溶液质量：甲乙 D甲、乙溶液质量均减小5图中M、N 分别表示两种固体物质（不含结晶水）的溶解度曲线，试根据图中曲线判断下列说法正确的是（）A等质量M、N的饱和溶液，当温度从tl升高到 t2后，所得溶液质量 N M BM、N两种饱和溶液，当温度从t2降到 tl时，析出的晶体NM Ct2时 150gN 的饱和溶液降温至tl，则析出晶体30g D同处 A点的相同质量的M、N 两种溶液，当温度从t2降到 tl后，剩余溶液的质量分数相等6甲、乙两种固体物质的溶解度曲线如图所示，从中获取的信息正确的是（）A甲的溶解度大于乙的溶解度B20时甲、乙的饱和溶液中溶质的质量分数相等C20时甲的饱和溶液升温至40，溶液中溶质的质量分数增大D降低温度可使乙的不饱和溶液变为饱和溶液7通过如图所示的实验（不考虑水分蒸发），得到相应的五种溶液下列叙述不正确的是（）At1时，溶液是不饱和溶液Bt2时，溶液是饱和溶液Ct1时，溶液是饱和溶液Dt2时溶液是不饱和溶液8图 1 是甲、乙两种固体物质的溶解度曲线，图2 是盛水的烧杯中放着t2下甲、乙两种物质和溶液的试管（不考虑溶剂的蒸发），根据图象和有关信息判断，下列说法中错误的是（）At2时，甲、乙两种物质的饱和溶液中溶质的质量分数大小关系为甲乙B 将甲、乙两种物质的饱和溶液都从t2将至 t1时，两种溶液中溶质的质量分数相等C向烧杯的水中加NaOH固体后，只有乙溶液中溶质的质量分数变小D向烧杯的水中加NH4NO3固体后，只有盛放甲溶液的试管中有晶体析出9如图是A、B 两种物质的溶解度曲线，下列叙述错误的是（）A30时，向100 克水中加入25 克 A 物质，充分溶解后所得溶液是饱和溶液BA物质的饱和溶液从30降温到10，变成不饱和溶液CB物质的饱和溶液从30降温到20，其溶质质量分数减小D30时，将B物质的不饱和溶液转变为饱和溶液，可以采取恒温蒸发溶剂的方法10a、b、c 三种物质的溶解度曲线如图所示取等质量 t2时的 a、b、c 三种物质的饱和溶液，分别蒸发等量水后恢复至t2下列说法不正确的是（）A原饱和溶液中，溶质的质量分数ab=c B恢复至t2时，析出溶质的质量ab=c C恢复至t2时，三种溶液一定都是饱和溶液D若继续降温至t1，三种溶液一定都是饱和溶液11甲、乙两种固体物质的溶解度曲线如图所示下列有关叙述中错误的是（）At2时甲的溶解度比乙的大B将甲、乙的饱和溶液从t2降到 t1，析出的甲的质量大 C升高温度可将甲的饱和溶液变为不饱和溶液Dt1时，甲和乙的饱和溶液各100g，其溶质的质量一定相等12如图是甲、乙、丙三种固体物质的溶解度曲线，下列说法错误的是（）At2时，甲、乙两种物质的溶解度相等B甲的溶解度随温度的升高而增大C分别将t3时甲、乙、丙的饱和溶液降温至t1，则所得的三种溶液中溶质的质量分数大小关系是乙甲丙文档编码:CS3I7D7X3A6 HE6P3P7U10C3 ZK5C9N9I7Z3文档编码:CS3I7D7X3A6 HE6P3P7U10C3 ZK5C9N9I7Z3文档编码:CS3I7D7X3A6 HE6P3P7U10C3 ZK5C9N9I7Z3文档编码:CS3I7D7X3A6 HE6P3P7U10C3 ZK5C9N9I7Z3文档编码:CS3I7D7X3A6 HE6P3P7U10C3 ZK5C9N9I7Z3文档编码:CS3I7D7X3A6 HE6P3P7U10C3 ZK5C9N9I7Z3文档编码:CS3I7D7X3A6 HE6P3P7U10C3 ZK5C9N9I7Z3文档编码:CS3I7D7X3A6 HE6P3P7U10C3 ZK5C9N9I7Z3文档编码:CS3I7D7X3A6 HE6P3P7U10C3 ZK5C9N9I7Z3文档编码:CS3I7D7X3A6 HE6P3P7U10C3 ZK5C9N9I7Z3文档编码:CS3I7D7X3A6 HE6P3P7U10C3 ZK5C9N9I7Z3文档编码:CS3I7D7X3A6 HE6P3P7U10C3 ZK5C9N9I7Z3文档编码:CS3I7D7X3A6 HE6P3P7U10C3 ZK5C9N9I7Z3文档编码:CS3I7D7X3A6 HE6P3P7U10C3 ZK5C9N9I7Z3文档编码:CS3I7D7X3A6 HE6P3P7U10C3 ZK5C9N9I7Z3文档编码:CS3I7D7X3A6 HE6P3P7U10C3 ZK5C9N9I7Z3文档编码:CS3I7D7X3A6 HE6P3P7U10C3 ZK5C9N9I7Z3文档编码:CS3I7D7X3A6 HE6P3P7U10C3 ZK5C9N9I7Z3文档编码:CS3I7D7X3A6 HE6P3P7U10C3 ZK5C9N9I7Z3文档编码:CS3I7D7X3A6 HE6P3P7U10C3 ZK5C9N9I7Z3文档编码:CS3I7D7X3A6 HE6P3P7U10C3 ZK5C9N9I7Z3文档编码:CS3I7D7X3A6 HE6P3P7U10C3 ZK5C9N9I7Z3文档编码:CS3I7D7X3A6 HE6P3P7U10C3 ZK5C9N9I7Z3文档编码:CS3I7D7X3A6 HE6P3P7U10C3 ZK5C9N9I7Z3文档编码:CS3I7D7X3A6 HE6P3P7U10C3 ZK5C9N9I7Z3文档编码:CS3I7D7X3A6 HE6P3P7U10C3 ZK5C9N9I7Z3文档编码:CS3I7D7X3A6 HE6P3P7U10C3 ZK5C9N9I7Z3文档编码:CS3I7D7X3A6 HE6P3P7U10C3 ZK5C9N9I7Z3文档编码:CS3I7D7X3A6 HE6P3P7U10C3 ZK5C9N9I7Z3文档编码:CS3I7D7X3A6 HE6P3P7U10C3 ZK5C9N9I7Z3文档编码:CS3I7D7X3A6 HE6P3P7U10C3 ZK5C9N9I7Z3文档编码:CS3I7D7X3A6 HE6P3P7U10C3 ZK5C9N9I7Z3文档编码:CS3I7D7X3A6 HE6P3P7U10C3 ZK5C9N9I7Z3文档编码:CS3I7D7X3A6 HE6P3P7U10C3 ZK5C9N9I7Z3文档编码:CS3I7D7X3A6 HE6P3P7U10C3 ZK5C9N9I7Z3文档编码:CS3I7D7X3A6 HE6P3P7U10C3 ZK5C9N9I7Z3文档编码:CS3I7D7X3A6 HE6P3P7U10C3 ZK5C9N9I7Z3文档编码:CS3I7D7X3A6 HE6P3P7U10C3 ZK5C9N9I7Z3文档编码:CS3I7D7X3A6 HE6P3P7U10C3 ZK5C9N9I7Z3文档编码:CS3I7D7X3A6 HE6P3P7U10C3 ZK5C9N9I7Z3文档编码:CS3I7D7X3A6 HE6P3P7U10C3 ZK5C9N9I7Z3文档编码:CS3I7D7X3A6 HE6P3P7U10C3 ZK5C9N9I7Z3文档编码:CS3I7D7X3A6 HE6P3P7U10C3 ZK5C9N9I7Z3文档编码:CS3I7D7X3A6 HE6P3P7U10C3 ZK5C9N9I7Z3文档编码:CS3I7D7X3A6 HE6P3P7U10C3 ZK5C9N9I7Z3文档编码:CS3I7D7X3A6 HE6P3P7U10C3 ZK5C9N9I7Z3文档编码:CS3I7D7X3A6 HE6P3P7U10C3 ZK5C9N9I7Z3文档编码:CS3I7D7X3A6 HE6P3P7U10C3 ZK5C9N9I7Z3Dt1时，丙的饱和溶液中溶质的质量分数为40%13根据如图的溶解度曲线，判断下列说法不正确的是（）A图中 a 点表示，t2时 100g水中最多溶解甲物质25g B 甲物质的溶解度随温度的升高而增大Ct1时，甲、乙两物质的饱和溶液中含溶质的质量相等Dt1时，甲、乙两物质的饱和溶液中溶质质量分数相等14如图是A、B、C 三种物质的溶解度曲线，下列说法错误的是（）A物质A 的溶解度随温度的升高而增大Bt1时，物质 C饱和溶液的溶质质量分数为20%C将 t2时物质C的饱和溶液降温到t1时，溶液浓度不会发生变化D将 t2时的物质A、B 饱和溶液降温到t1时，两溶液的浓度AB 15如图是甲、乙两种固体化合物的溶解度曲线，下列判断正确的是（）A甲的溶解度比乙大B 甲的溶解度受温度影响比乙大C升高温度可以使甲的不饱和溶液变为饱和溶液D在 t1时将 25g 乙投入 100g 水中，可以形成125g溶液16右图为NaCl、KNO3的溶解度曲线，下列说法正确的是（）A KNO3的溶解度一定大于NaCl溶解度B20时，50g 水最多能溶解31.6gKNO3Ct 时，NaCl 和 KNO3的饱和溶液的溶质质量分数相等D50的 NaCl 饱和溶液降温到20时变成不饱和溶液17如图为A，B，C 三种不含结晶水的固体物质溶解度曲线下列说法不正确的是（）A t1时，65gA 的饱和溶液中含有溶质15g B要从 B的溶液中得到B，通常可采用蒸发溶剂的方法C除去 A中含有少量的B，可采用冷却热饱和溶液的方法D在 t2时，将 A，C两种物质的饱和溶液升温到t3后，两种溶液中溶质的质量分数仍相等18如图是甲、乙两种物质（不含结晶水）的溶解度曲线下列说法正确的是（）A乙的溶解度受温度影响较大Bt1时，甲的饱和溶液的溶质质量分数为30%Ct2时甲与乙的溶解度相等D甲中混有少量乙，可用降温结晶的方法提纯甲二、填空题19根据固体物质M在水中的溶解度曲线图，回答下列问题：（1）B点所表示的溶液为M在 t2的（选填“饱和”或“不饱和”）溶液（2）将 A点对应的溶液从t1升温到 t2（忽略水的蒸发），文档编码:CS3I7D7X3A6 HE6P3P7U10C3 ZK5C9N9I7Z3文档编码:CS3I7D7X3A6 HE6P3P7U10C3 ZK5C9N9I7Z3文档编码:CS3I7D7X3A6 HE6P3P7U10C3 ZK5C9N9I7Z3文档编码:CS3I7D7X3A6 HE6P3P7U10C3 ZK5C9N9I7Z3文档编码:CS3I7D7X3A6 HE6P3P7U10C3 ZK5C9N9I7Z3文档编码:CS3I7D7X3A6 HE6P3P7U10C3 ZK5C9N9I7Z3文档编码:CS3I7D7X3A6 HE6P3P7U10C3 ZK5C9N9I7Z3文档编码:CS3I7D7X3A6 HE6P3P7U10C3 ZK5C9N9I7Z3文档编码:CS3I7D7X3A6 HE6P3P7U10C3 ZK5C9N9I7Z3文档编码:CS3I7D7X3A6 HE6P3P7U10C3 ZK5C9N9I7Z3文档编码:CS3I7D7X3A6 HE6P3P7U10C3 ZK5C9N9I7Z3文档编码:CS3I7D7X3A6 HE6P3P7U10C3 ZK5C9N9I7Z3文档编码:CS3I7D7X3A6 HE6P3P7U10C3 ZK5C9N9I7Z3文档编码:CS3I7D7X3A6 HE6P3P7U10C3 ZK5C9N9I7Z3文档编码:CS3I7D7X3A6 HE6P3P7U10C3 ZK5C9N9I7Z3文档编码:CS3I7D7X3A6 HE6P3P7U10C3 ZK5C9N9I7Z3文档编码:CS3I7D7X3A6 HE6P3P7U10C3 ZK5C9N9I7Z3文档编码:CS3I7D7X3A6 HE6P3P7U10C3 ZK5C9N9I7Z3文档编码:CS3I7D7X3A6 HE6P3P7U10C3 ZK5C9N9I7Z3文档编码:CS3I7D7X3A6 HE6P3P7U10C3 ZK5C9N9I7Z3文档编码:CS3I7D7X3A6 HE6P3P7U10C3 ZK5C9N9I7Z3文档编码:CS3I7D7X3A6 HE6P3P7U10C3 ZK5C9N9I7Z3文档编码:CS3I7D7X3A6 HE6P3P7U10C3 ZK5C9N9I7Z3文档编码:CS3I7D7X3A6 HE6P3P7U10C3 ZK5C9N9I7Z3文档编码:CS3I7D7X3A6 HE6P3P7U10C3 ZK5C9N9I7Z3文档编码:CS3I7D7X3A6 HE6P3P7U10C3 ZK5C9N9I7Z3文档编码:CS3I7D7X3A6 HE6P3P7U10C3 ZK5C9N9I7Z3文档编码:CS3I7D7X3A6 HE6P3P7U10C3 ZK5C9N9I7Z3文档编码:CS3I7D7X3A6 HE6P3P7U10C3 ZK5C9N9I7Z3文档编码:CS3I7D7X3A6 HE6P3P7U10C3 ZK5C9N9I7Z3文档编码:CS3I7D7X3A6 HE6P3P7U10C3 ZK5C9N9I7Z3文档编码:CS3I7D7X3A6 HE6P3P7U10C3 ZK5C9N9I7Z3文档编码:CS3I7D7X3A6 HE6P3P7U10C3 ZK5C9N9I7Z3文档编码:CS3I7D7X3A6 HE6P3P7U10C3 ZK5C9N9I7Z3文档编码:CS3I7D7X3A6 HE6P3P7U10C3 ZK5C9N9I7Z3文档编码:CS3I7D7X3A6 HE6P3P7U10C3 ZK5C9N9I7Z3文档编码:CS3I7D7X3A6 HE6P3P7U10C3 ZK5C9N9I7Z3文档编码:CS3I7D7X3A6 HE6P3P7U10C3 ZK5C9N9I7Z3文档编码:CS3I7D7X3A6 HE6P3P7U10C3 ZK5C9N9I7Z3文档编码:CS3I7D7X3A6 HE6P3P7U10C3 ZK5C9N9I7Z3文档编码:CS3I7D7X3A6 HE6P3P7U10C3 ZK5C9N9I7Z3文档编码:CS3I7D7X3A6 HE6P3P7U10C3 ZK5C9N9I7Z3文档编码:CS3I7D7X3A6 HE6P3P7U10C3 ZK5C9N9I7Z3文档编码:CS3I7D7X3A6 HE6P3P7U10C3 ZK5C9N9I7Z3文档编码:CS3I7D7X3A6 HE6P3P7U10C3 ZK5C9N9I7Z3文档编码:CS3I7D7X3A6 HE6P3P7U10C3 ZK5C9N9I7Z3文档编码:CS3I7D7X3A6 HE6P3P7U10C3 ZK5C9N9I7Z3文档编码:CS3I7D7X3A6 HE6P3P7U10C3 ZK5C9N9I7Z3在此过程中M的质量分数（选填“增大”、“减小”或“不变”）；（3）将 A 点对应的100g 溶液恒温蒸发10g 水，可析出M 的质量为g，剩下的溶液中M 的质量分数为20如图是甲、乙两种固体物质的溶解度曲线（1）溶解度随温度升高而减小的物质是（2）t1时，甲、乙两种物质的溶解度（3）要使乙的饱和溶液变为不饱和溶液，除加水之外还可采用的方法是（4）要使甲从其饱和溶液中析出，可用的方法（5）t2时，甲的饱和溶液中溶质的质量分数是21如图是氯化钠与硝酸钾的溶解度曲线，回答下列问题（1）配置 200g 0.9%的医用生理盐水，需要NaCl 的质量为g（2）由图可知，t1时，硝酸 钾 的 溶 解 度（填“”、“”或“=”）氯化钠的溶解度；欲提纯混有少量氯化钠的硝酸钾固体，应采用的方法是（3）t2时，将50g 硝酸钾固体完全溶于50g 水，形成溶液的质量是22如图是甲、乙、丙三种固体物质的溶解度曲线，请回答：（1）t1时，甲、乙、丙三种物质的溶解度由大到小的顺序为；（2）在 t2时，将30g 甲物质溶于 50 克水中，充分溶解，可形成g 甲溶液；（3）甲 中混有少量乙时，可采用方法提纯23如图是甲、乙两种固体物质的溶解度曲线（1）时，甲和乙的溶解度相等（2）乙的饱和溶液从t2降到t1时，乙的溶液为（填“饱和”或“不饱和”）溶液（3）t2时，甲的饱和溶液中溶质的质量分数为（精确到0.1%）（4）t2时，将100g10%的甲溶液加水稀释成溶质质量分数为5%的溶液，应加水g24a、b 两种固体物质的溶解度曲线如图所示回答下列问题（1）t2时，比较a、b 物质的溶解度大小（2）要使饱和的b 溶液变为不饱和溶液，可采取的措施是；（3）将 t1时 a、b 两种物质的饱和溶液升温至t2（溶剂量不变），溶液中溶质质量分数保持不变的是25甲、乙、丙三种固体物质的溶解度曲线如图所示，请回答：（1）25时，将30g 甲固体加入到100g 水中，充分溶解并恢复到原温度后，得到的溶液中甲的质量分数为（2）要使 25时接近饱和的丙溶液变成该温度下的饱和溶液，可采用的一种方法是（3）将 25时乙的饱和溶液升温到35，则其溶液的溶质的质量分数（填“变大”“变小”或“不文档编码:CS3I7D7X3A6 HE6P3P7U10C3 ZK5C9N9I7Z3文档编码:CS3I7D7X3A6 HE6P3P7U10C3 ZK5C9N9I7Z3文档编码:CS3I7D7X3A6 HE6P3P7U10C3 ZK5C9N9I7Z3文档编码:CS3I7D7X3A6 HE6P3P7U10C3 ZK5C9N9I7Z3文档编码:CS3I7D7X3A6 HE6P3P7U10C3 ZK5C9N9I7Z3文档编码:CS3I7D7X3A6 HE6P3P7U10C3 ZK5C9N9I7Z3文档编码:CS3I7D7X3A6 HE6P3P7U10C3 ZK5C9N9I7Z3文档编码:CS3I7D7X3A6 HE6P3P7U10C3 ZK5C9N9I7Z3文档编码:CS3I7D7X3A6 HE6P3P7U10C3 ZK5C9N9I7Z3文档编码:CS3I7D7X3A6 HE6P3P7U10C3 ZK5C9N9I7Z3文档编码:CS3I7D7X3A6 HE6P3P7U10C3 ZK5C9N9I7Z3文档编码:CS3I7D7X3A6 HE6P3P7U10C3 ZK5C9N9I7Z3文档编码:CS3I7D7X3A6 HE6P3P7U10C3 ZK5C9N9I7Z3文档编码:CS3I7D7X3A6 HE6P3P7U10C3 ZK5C9N9I7Z3文档编码:CS3I7D7X3A6 HE6P3P7U10C3 ZK5C9N9I7Z3文档编码:CS3I7D7X3A6 HE6P3P7U10C3 ZK5C9N9I7Z3文档编码:CS3I7D7X3A6 HE6P3P7U10C3 ZK5C9N9I7Z3文档编码:CS3I7D7X3A6 HE6P3P7U10C3 ZK5C9N9I7Z3文档编码:CS3I7D7X3A6 HE6P3P7U10C3 ZK5C9N9I7Z3文档编码:CS3I7D7X3A6 HE6P3P7U10C3 ZK5C9N9I7Z3文档编码:CS3I7D7X3A6 HE6P3P7U10C3 ZK5C9N9I7Z3文档编码:CS3I7D7X3A6 HE6P3P7U10C3 ZK5C9N9I7Z3文档编码:CS3I7D7X3A6 HE6P3P7U10C3 ZK5C9N9I7Z3文档编码:CS3I7D7X3A6 HE6P3P7U10C3 ZK5C9N9I7Z3文档编码:CS3I7D7X3A6 HE6P3P7U10C3 ZK5C9N9I7Z3文档编码:CS3I7D7X3A6 HE6P3P7U10C3 ZK5C9N9I7Z3文档编码:CS3I7D7X3A6 HE6P3P7U10C3 ZK5C9N9I7Z3文档编码:CS3I7D7X3A6 HE6P3P7U10C3 ZK5C9N9I7Z3文档编码:CS3I7D7X3A6 HE6P3P7U10C3 ZK5C9N9I7Z3文档编码:CS3I7D7X3A6 HE6P3P7U10C3 ZK5C9N9I7Z3文档编码:CS3I7D7X3A6 HE6P3P7U10C3 ZK5C9N9I7Z3文档编码:CS3I7D7X3A6 HE6P3P7U10C3 ZK5C9N9I7Z3文档编码:CS3I7D7X3A6 HE6P3P7U10C3 ZK5C9N9I7Z3文档编码:CS3I7D7X3A6 HE6P3P7U10C3 ZK5C9N9I7Z3文档编码:CS3I7D7X3A6 HE6P3P7U10C3 ZK5C9N9I7Z3文档编码:CS3I7D7X3A6 HE6P3P7U10C3 ZK5C9N9I7Z3文档编码:CS3I7D7X3A6 HE6P3P7U10C3 ZK5C9N9I7Z3文档编码:CS3I7D7X3A6 HE6P3P7U10C3 ZK5C9N9I7Z3文档编码:CS3I7D7X3A6 HE6P3P7U10C3 ZK5C9N9I7Z3文档编码:CS3I7D7X3A6 HE6P3P7U10C3 ZK5C9N9I7Z3文档编码:CS3I7D7X3A6 HE6P3P7U10C3 ZK5C9N9I7Z3文档编码:CS3I7D7X3A6 HE6P3P7U10C3 ZK5C9N9I7Z3文档编码:CS3I7D7X3A6 HE6P3P7U10C3 ZK5C9N9I7Z3文档编码:CS3I7D7X3A6 HE6P3P7U10C3 ZK5C9N9I7Z3文档编码:CS3I7D7X3A6 HE6P3P7U10C3 ZK5C9N9I7Z3文档编码:CS3I7D7X3A6 HE6P3P7U10C3 ZK5C9N9I7Z3文档编码:CS3I7D7X3A6 HE6P3P7U10C3 ZK5C9N9I7Z3文档编码:CS3I7D7X3A6 HE6P3P7U10C3 ZK5C9N9I7Z3变”）（4）向 100g35的水中加入42g 甲固体，发现全部溶解，一段时间后又有少量甲的晶体析出“全部溶解”的原因是26如图为KNO3和 NaCl两种物质的溶解度曲线（1）t1时，两种物质溶解度的大小关系：NaCl KNO3（填“”或“=”或“”）（2）t2时，将25g 氯化钠固体投入50g 水中，充分溶解后可得到NaCl 溶液（填“不饱和”或“饱和”或“不能确定”）（3）将饱和KNO3溶液变为不饱和KNO3溶液，可行的方法之一是添加溶剂（水），还可以是（4）你从图中可获得什么信息（写出一条即可）：27如图是甲、乙两种固体物质的溶解度曲线（1）由图中可看出，甲乙两物质中，溶解度受温度 影 响 较 大 的 物 质是；（2）要使甲的饱和溶液变为不饱和溶液，可采取的方法是（写出一种即可）；（3）t2时，将甲、乙各 20g 分别加入到两只盛有100g水的烧杯中，充分搅拌，所得乙溶液为溶液（填“饱和”或“不饱和”）；若将温度都降低到t1，甲溶液中溶质的质量分数（填“”、“”或“=”）乙溶液中溶质的质量分数三、解答题28请按要求回答下列问题：（1）甲、乙两种固体物质的溶解度曲线如图，甲物质的溶解度为m1g 时，对应的温度是；在温度为a2时，甲、乙两物质的溶解度关系是甲乙（填“大于”或“小于”或“等于”）（2）某同学用CO在高温条件下与氧化铜反应，其化学方程式为，所得到的气体通入到足量澄清石灰水中，观察到的现象是29如图所示是A、B、C 三种物质 的 溶 解 度 曲线，据此图回答：（1）t1时，A、B、C三种物质的溶解度由大到小的顺序是；（2）t2时，将30gA放入 100g 水中，充分搅拌后，所得溶溶液的溶质质量分数是；（3）t3时，将等质量A、B两种物质的饱和溶液降温到 t2时，析出晶体质量较大的是；（4）t3时，将25gC放入 100g 水中，充分搅拌后得到 C 的饱和溶液，在不改变溶剂量的前提下，将其变为不饱和溶液的方法是30如图是某固体物 质 的 溶 解 度 曲线（1）30时，该物 质 的 溶 解 度 为g（2）50时，将30g 该物质加入到100g 水中，搅拌后得到的为（填“饱和”或“不饱和”）溶液；该溶液的溶质质量分数为文档编码:CS3I7D7X3A6 HE6P3P7U10C3 ZK5C9N9I7Z3文档编码:CS3I7D7X3A6 HE6P3P7U10C3 ZK5C9N9I7Z3文档编码:CS3I7D7X3A6 HE6P3P7U10C3 ZK5C9N9I7Z3文档编码:CS3I7D7X3A6 HE6P3P7U10C3 ZK5C9N9I7Z3文档编码:CS3I7D7X3A6 HE6P3P7U10C3 ZK5C9N9I7Z3文档编码:CS3I7D7X3A6 HE6P3P7U10C3 ZK5C9N9I7Z3文档编码:CS3I7D7X3A6 HE6P3P7U10C3 ZK5C9N9I7Z3文档编码:CS3I7D7X3A6 HE6P3P7U10C3 ZK5C9N9I7Z3文档编码:CS3I7D7X3A6 HE6P3P7U10C3 ZK5C9N9I7Z3文档编码:CS3I7D7X3A6 HE6P3P7U10C3 ZK5C9N9I7Z3文档编码:CS3I7D7X3A6 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