2.2.1离子反应 练习

适用年级:高一
试卷号:284984

试卷类型:课时练习
试卷考试时间:2019/9/12

1.选择题(共3题)

1.如图是周期表中原子序数小于20的某些元素的单质的沸点与原子序数的关系,图中的原子序数是连续的.

试根据图,回答下列问题:

2.

阅读下面短文,从短文后所给的A、B、C三个选项中选出能填入相应空白处的最佳选项。

    What is the best way to study? This is a very important question. Some Chinese students often 1 very hard for long hours. This is a 2 habit, but it is not a better way to study. An efficient (高效的) student must 3 enough sleep, enough food and enough rest. Every week you 4 to go out for a walk or visit some friends or some nice places. It's good for your study. When you 5back to your study, you'll find yourself 6 than before and you'll learn more.

    Maybe we can 7that learning English is like taking Chinese medicine. We don't mean that it's 8. We mean that like Chinese medicine, the effect (效果) of your study 9 slowly but surely.

     10 slowly but surely every day and effects will come just like Chinese medicine.

3.

阅读下面短文,从短文后所给的A、B、C三个选项中选出能填入相应空白处的最佳选项。

    What is the best way to study? This is a very important question. Some Chinese students often 1 very hard for long hours. This is a 2 habit, but it is not a better way to study. An efficient (高效的) student must 3 enough sleep, enough food and enough rest. Every week you 4 to go out for a walk or visit some friends or some nice places. It's good for your study. When you 5back to your study, you'll find yourself 6 than before and you'll learn more.

    Maybe we can 7that learning English is like taking Chinese medicine. We don't mean that it's 8. We mean that like Chinese medicine, the effect (效果) of your study 9 slowly but surely.

     10 slowly but surely every day and effects will come just like Chinese medicine.

2.单选题(共1题)

4.
某同学在实验室中进行如下实验:
编号



实验



现象
没有明显变化,溶液仍为无色
有白色沉淀生成,溶液为蓝色
有无色气体放出
 
以下结论正确的是(  )
A.Ⅰ中无明显变化,说明两溶液不反应
B.Ⅱ中的白色沉淀为CuCl2
C.Ⅲ中的离子方程式为2H+Zn===Zn2+H2
D.Ⅲ中发生的反应不是离子反应

3.多选题(共1题)

5.
实验室有三缸废液,分别含有Na2CO3、Ca(OH)2和HCl,且它们的物质的量之比为1∶1∶2。要让三缸废液混合后,所得溶液的溶质只有NaCl,应选择的混合顺序是(注:过滤等实验操作己省略)
A.先将Na2CO3废液和Ca(OH)2废液混合,再与HCl废液混合
B.先将Na2CO3废液和HCl废液混合,再与Ca(OH)2废液混合
C.先将Ca(OH)2废液和HCl废液混合,再与Na2CO3废液混合
D.将Na2CO3废液和Ca(OH)2废液同时慢慢倒入HCl废液中

4.填空题(共2题)

6.
某同学称取一定质量的MgCl2固体配成溶液,在该溶液中加入一定量的稀盐酸,然后向此混合溶液中逐滴加入NaOH溶液(如图甲所示)。滴加过程中产生沉淀的质量与加入NaOH溶液的体积的关系如图乙所示。

请回答下列问题:
(1)溶解MgCl2固体所用的玻璃仪器有____________(填字母)。
A.天平B.烧杯C.漏斗D.玻璃棒
(2)OA段反应的离子方程式为________________________________。
(3)AB段反应的离子方程式为______________________________。
(4)在B点对应的溶液中滴加AgNO3溶液,观察到的现象是_____________________,反应的离子方程式为______________________。
7.
有一固体混合物,可能由Na2CO3、Na2SO4、CuSO4、CaCl2、NaCl等混合而成,为检验它们,做了以下实验:
①将固体混合物溶于水中,搅拌后得无色透明溶液;
②往此溶液中滴加硝酸钡溶液,有白色沉淀产生;
③过滤,将沉淀物置于稀硝酸中,发现沉淀全部溶解。
根据上述实验事实,回答下列问题:
(1)原固体混合物中一定含有的物质是________,一定不含有的物质是________,可能含有的物质是________(以上空格均填写化学式)。对可能含有的物质,可采用向滤液中滴加___________________溶液的方法来检验。
(2)写出步骤③中的离子方程式__________________________________________________。
试卷分析
  • 【1】题量占比

    选择题:(3道)

    单选题:(1道)

    多选题:(1道)

    填空题:(2道)

  • 【2】:难度分析

    1星难题:0

    2星难题:0

    3星难题:0

    4星难题:0

    5星难题:0

    6星难题:4

    7星难题:0

    8星难题:0

    9星难题:0