人教版初中化学九年级下册 第十单元课题2 酸和碱的中和反应(第1课时) 同步测试

适用年级:初三
试卷号:314669

试卷类型:课时练习
试卷考试时间:2017/12/13

1.计算题(共1题)

1.
现有两种稀溶液:标记为A的0.040 0%的氢氧化钠溶液;标记为B的0.365%的盐酸。假设本题所涉及的各种稀溶液的密度均近似为1.00 g·mL1,且每滴溶液的体积近似为0.05 mL,试解答下列各小题。
(1)恰好完全中和20.0 g A溶液,需加入B溶液多少克?
(2)在盛有20.0 mL A溶液的锥形瓶中滴加2滴酚酞溶液,再向瓶中缓缓倒入10.0 mL B溶液,边倒边振荡,充分混合后溶液呈无色。若取该无色混合液3.00 mL于一支试管内,再向试管内滴加1滴A溶液,试通过计算说明此时试管内溶液呈现的颜色。

2.单选题(共3题)

2.
X可以发生如下反应:(1)X+酸=盐+水;(2)X+非金属氧化物=盐+水。X可能是(  )
A.氧化铜B.盐酸
C.氢氧化钠D.碳酸钠
3.
下列物质的应用不正确的是(  )
A.用水浇灌庄稼B.不锈钢用于制餐具
C.熟石灰改良酸性土壤D.氧气用于光合作用
4.
如图所示实验,将稀盐酸滴到含有酚酞试液的氢氧化钠溶液中,直至最终烧杯内溶液呈现无色.则下列说法正确的是(  )
A.酚酞使氢氧化钠溶液变红色
B.溶液中所有物质均以离子形式存在
C.烧杯内显示无色,说明溶液中一定存在大量H+
D.烧杯内显示无色,说明溶液中溶质一定有氯化钠,可能有氯化氢

3.选择题(共1题)

5.用括号里所给动词的适当形式填空。请将答案填写指定位置。

    It {#blank#}1{#/blank#}(get) dark. Paul looked out of the window and signed (叹气). Dad said he could come home by 5:30, but it was almost 7:00. Even if Dad came back, it wouldn't be much fun playing baseball in the dark. Paul walked into his room and{#blank#}2{#/blank#}(throw) his baseball into the corner. He tried to do some homework, but couldn't.

    Paul couldn't understand why Dad was so busy. He threw himself into the sofa and soon fell asleep. His book{#blank#}3{#/blank#}(open) to the first page.

    The next day at school, Paul didn't hand in his homework and failed a test. Mrs. Green, his teacher, asked him to stay after school. “This isn't like you. What's wrong?”

    Paul just sat there quietly. “Paul, if you don't want to talk, I will. I know that something wrong     with you, but you have to get it out. You need to tell someone.”

    As Paul walked home, he thought of what Mrs. Green said. When Paul got home, he called his dad. But there was no answer. Then it went to voicemail (语音信箱). Paul began talking: “Dad, I can't play with you next weekend. I {#blank#}4{#/blank#}(get) lots of problems with my homework. Also, I really don't want to spend another day looking out of the window and waiting. Whenever you break our plans, Dad, it  {#blank#}5{#/blank#}(hurt) me. It's not too late to rebuild our relationship, but we have to start small. I call you to ask you to help me with my homework sometime. Dad, I love you.”

    As Paul ended the call, he felt much relaxed. He didn't know whether his dad{#blank#}6{#/blank#}(be) different, but it didn't matter. He himself changed. He expressed his feelings to the right person. He had a clear head as he did his homework that evening.

4.填空题(共3题)

6.
将物质按一定标准分类后进行研究,能收到事半功倍的效果。请参与下列同学的讨论并按要求回答:

请将上图中所述物质的化学式填在相应的空格处:氧化物___________、酸___________、碱___________、盐___________。
7.
在学习“酸碱中和反应”时,老师给大家变了一个魔术一使“水”变色的杯子。操作过程及现象如图13所示。

老师揭秘:“空”杯子底部事先涂抹了某种无色液体,无色的“水”是事先用两种无色溶液混合而成。请回答下列问题:
(1)“空”杯内涂抹的物质可能是    溶液。
(2)此过程中发生反应的化学方程式可能是
(3)最终溶液为无色,能否说明该溶液一定呈中性? _(选填“能”或“不能”),理由是     __。
8.
A、B、C是初中化学中的常见物质,分别由一种、两种、三种元素组成,A发生化合反应、B发生分解反应、C发生中和反应都能生成水.据此请回答:
(1)写出A生成水的化学方程式
(2)写出B的化学式
(3)从化合物的分类上说C属于   
试卷分析
  • 【1】题量占比

    计算题:(1道)

    单选题:(3道)

    选择题:(1道)

    填空题:(3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:2

    9星难题:0