（7）溶解度及溶解度曲线——2021-2022学年人教版化学九年级水和溶液专题小练
※题型：单选题※知识点：单选题※试题难度：较易<br>20℃时,氯酸钾的溶解度是7.4g,它表示( )<br>A.20℃时,100g氯酸钾饱和溶液中含氯酸钾7.4g<br>B.20℃时,氯酸钾在水中溶解7.4g,溶液达到饱和状态<br>C.100g水溶解7.4g氯酸钾达到饱和状态<br>D.20℃时,100g水中最多只能溶解7.4g氯酸钾<br>答案<br><img src="https://picture2.zhihuicn.com/answer/2/5/2021/95169a6da80a467faac85f61cdb81a67/01A39E48B8A67989A23F6887F26FCC64.png"><br>解析<br><img src="https://picture2.zhihuicn.com/explain/2/5/2021/03c82841c0bf4440939e8a83e0f30d1f/CF5491E8CFC9A15FC6CFB819A3DA7716.png"><br><br>※题型：单选题※知识点：单选题※试题难度：中等<br>如图是甲、乙两种固体物质的溶解度曲线。下列说法正确的是( )<img src="https://picture2.zhihuicn.com/testImage/2/2020/1/9/8B62A1E39FBB41AF1B5E4E51B4CFB3DC.png"><br>A.<img src="https://picture2.zhihuicn.com/testImage/2/2020/1/9/FCCD9596601883BB3311EAC823C6623F.png"><br>℃时,甲、乙两物质的溶解度大小关系:甲>乙<br>B.<img src="https://picture2.zhihuicn.com/testImage/2/2020/1/9/987E7EF0931F8B5597DE88936DA9F6B2.png"><br>℃时,等质量的甲、乙溶液中,溶剂的质量一定相等<br>C.<img src="https://picture2.zhihuicn.com/testImage/2/2020/1/9/5F873203FC8CA51A39E7B4B25D1237FE.png"><br>℃时,若将N点的甲溶液转变为M点的甲溶液,可采取恒温蒸发溶剂的方法<br>D.将<img src="https://picture2.zhihuicn.com/testImage/2/2020/1/9/FCCD9596601883BB3311EAC823C6623F.png"><br>℃时甲、乙的饱和溶液升温至<img src="https://picture2.zhihuicn.com/testImage/2/2020/1/9/5F873203FC8CA51A39E7B4B25D1237FE.png"><br>℃,所得甲乙的溶液仍都是饱和溶液<br>答案<br><img src="https://picture2.zhihuicn.com/answer/2/5/2020/fcaf669a409f4e12bee46ca5f27a9c18/06CA09E70C17EF8BA2D3B8C70D693953.png"><br>解析<br><img src="https://picture2.zhihuicn.com/explain/2/5/2020/724087c97159422fb43e43a5dc8d396b/8B2C26144EA03B9E9CD24B72CACCF0C9.png"><br><br>※题型：单选题※知识点：单选题※试题难度：中等<br>下表是不同温度时硝酸钾的溶解度,下列有关说法正确的是( )<br><tbody><br>温度/℃<br>0<br>20<br>40<br>60<br>80<br>100<br>溶解度/g<br>13.3<br>31.6<br>63.9<br>110<br>169<br>246<br></tbody><br>A.20℃时,100g水中溶解的硝酸钾越多溶解度就越大<br>B.40℃时,100g硝酸钾饱和溶液中含有硝酸钾63.9g<br>C.60℃时,100g水中最多能溶解硝酸钾110g<br>D.100℃时水中溶解的硝酸钾一定比80℃时水中溶解的硝酸钾多<br>答案<br><img src="https://picture2.zhihuicn.com/answer/2/5/2021/777b9faa494249db9aba4cd4392721ab/06CA09E70C17EF8BA2D3B8C70D693953.png"><br>解析<br><img src="https://picture2.zhihuicn.com/explain/2/5/2021/f716f4fedd934fb5b62875bbccafa47c/14F9B36A35673BBA0E14ACC18E528ACC.png"><br><br>※题型：单选题※知识点：单选题※试题难度：中等<br>如图为氯化铵和硫酸钠的溶解度曲线。下列说法中不正确的是( )<img src="https://picture2.zhihuicn.com/testImage/2/2013/10/18/B71F508EC0F516E5E9D20B798910403D.png"><br>A.30℃时,氯化铵、硫酸钠的溶解度相同<br>B.氯化铵的溶解度随温度的升高而增大<br>C.将50℃时硫酸钠的饱和溶液降低温度,始终有晶体析出<br>D.将60℃时硫酸钠的饱和溶液降温至40℃,溶质的质量分数不变<br>答案<br><img src="https://picture2.zhihuicn.com/answer/2/5/2013/8f6d154742ed48f0b614821a112d03f4/06CA09E70C17EF8BA2D3B8C70D693953.png"><br>解析<br><img src="https://picture2.zhihuicn.com/explain/2/5/2013/308a7a10a4b9471db7d5af3eb662e10c/9FC3E43BB979882A9B45C4962DFA1BE6.png"><br><br>※题型：单选题※知识点：单选题※试题难度：中等<br>20℃时,15gA与30g水混合正好形成饱和溶液,40℃时,20g水最多能溶解5gB物质,则A、B两物质的溶解度大小关系是( )<br>A.<img src="https://picture2.zhihuicn.com/testImage/2/2021/3/8/D6FF2C3339984DDB61F694EF4184CC06.png"><br>B.<img src="https://picture2.zhihuicn.com/testImage/2/2021/3/8/9FE5C9CEEE510D54164F313870692E5A.png"><br>C.<img src="https://picture2.zhihuicn.com/testImage/2/2021/3/8/D6991F05F56D9CD04A7561B70BC94FCF.png"><br>D.无法确定<br>答案<br><img src="https://picture2.zhihuicn.com/answer/2/5/2021/dbc6e7aeb2a24a6fb4fa76cbd659e271/01A39E48B8A67989A23F6887F26FCC64.png"><br>解析<br><img src="https://picture2.zhihuicn.com/explain/2/5/2021/0c609e5295ad4e94a97f5b88c2879afb/0EB1085EE80B49ABF4BBB398FDD10BC5.png"><br><br>※题型：单选题※知识点：单选题※试题难度：较易<br>生活中的下列现象,能说明气体的溶解度随压强变化而变化的是() A.夏季,鱼塘中的鱼常常会浮在水面呼吸<br>B.喝了汽水以后,常常会打嗝<br>C.打开汽水瓶盖,有大量气泡冒出<br>D.烧开水时,沸腾前水中有气泡产生<br>答案<br><img src="https://picture2.zhihuicn.com/answer/2/5/2020/78bf71445e264dd68ab533e34f2f8b08/06CA09E70C17EF8BA2D3B8C70D693953.png"><br>解析<br><img src="https://picture2.zhihuicn.com/explain/2/5/2020/c806ab912a5e45e787e45d66c19ea315/A9390E35BF29869C043E99956D8AE8E8.png"><br><br>※题型：单选题※知识点：单选题※试题难度：中等<br>打开汽水瓶盖有大量的气泡逸出,说法错误的是( )<br>A.溶解度变小 B.溶质的质量变小<br>C.溶液浓度不变 D.还是饱和溶液<br>答案<br><img src="https://picture2.zhihuicn.com/answer/2/5/2021/560f9ce96e2843e29e7069d7ad212076/06CA09E70C17EF8BA2D3B8C70D693953.png"><br>解析<br>略<br>※题型：单选题※知识点：单选题※试题难度：中等<br>下图是甲、乙两种固体物质的溶解度曲线。下列有关叙述正确的是( )<img src="https://picture2.zhihuicn.com/testImage/2/2021/8/4/C07898DA8E5B8F05A4D95184ED208989.png"><br>A.0℃时,甲物质的溶解度为40g<br>B.10℃时,甲、乙两种物质的溶解度相等<br>C.30℃时,乙物质饱和溶液中溶质的质量分数为60%<br>D.等质量的甲、乙物质饱和溶液从30℃降至10℃,析出的晶体质量相等<br>答案<br><img src="https://picture2.zhihuicn.com/answer/2/5/2021/855e7cf45f524013a03fc56e1479a769/76900E09FAB5EBA344B8EA84E844FF07.png"><br>解析<br><img src="https://picture2.zhihuicn.com/explain/2/5/2021/0df747a1e8534a279c831242e78b6016/08423A05F38E8E734086183CA2CAE1C2.png"><br><br>※题型：单选题※知识点：单选题※试题难度：中等<br>如图是A、B、C三种物质的溶解度曲线,下列说法错误的是( )<img src="https://picture2.zhihuicn.com/testImage/2/2021/8/10/E5D3543625FF79AB9C971F9FAA7D9049.png"><br>A.<img src="https://picture2.zhihuicn.com/testImage/2/2021/8/10/97DE7627ECA82C404E1EFD3560FA9B7B.png"><br>时,A、B、C的溶解度由大到小的顺序是C>B>A<br>B.当A中含少量B时,可通过降温结晶的方法提纯A<br>C.升高温度可使接近饱和的C溶液变为饱和<br>D.将<img src="https://picture2.zhihuicn.com/testImage/2/2021/8/10/32950889DA083F8FEB4B456B77CE675B.png"><br>时A、B、C的饱和溶液同时降温至<img src="https://picture2.zhihuicn.com/testImage/2/2021/8/10/97DE7627ECA82C404E1EFD3560FA9B7B.png"><br>后,所得溶液中溶质的质量分数由大到小的顺序是C>B>A<br>答案<br><img src="https://picture2.zhihuicn.com/answer/2/5/2021/731396a6e2304decb38d6658d9e2b166/01A39E48B8A67989A23F6887F26FCC64.png"><br>解析<br><img src="https://picture2.zhihuicn.com/explain/2/5/2021/6ba8edeee9d44bd3b161b295527435f2/3EB5B68B46C3AA511EB648206649E7EA.png"><br><br>※题型：填空题※知识点：填空题※试题难度：较易<br>如图是<br>a<br>、<br>b<br>、<br>c<br>三种物质的溶解度曲线,据图回答下列问题:<br>1.P点的含义是________________;<br>2.<img src="https://picture2.zhihuicn.com/testImage/2/2021/8/6/97DE7627ECA82C404E1EFD3560FA9B7B.png"><br>时,20克a物质加入50克水中不断搅拌,形成的是________________(填“饱和”或“不饱和”)溶液,所得溶液的质量为________________克;3.a中混有少量b,若要从混合液中分离出a,可采用的方法是________________。<img src="https://picture2.zhihuicn.com/testImage/2/2021/8/6/2059A0E159C62E64E2AFF336C6802DA1.png"><br><br>答案<br><img src="https://picture2.zhihuicn.com/answer/2/5/2021/0b3d2759227d407e8bb4ab4b047979bf/82CA1A68D441CD636C5122F719657B55.png"><br>解析<br><img src="https://picture2.zhihuicn.com/explain/2/5/2021/2bd3741e8bc24256807a39ba7219f863/A47FF7E1C471373DF5007A5704335A1A.png"><br><br>
页:
[1]