配套习题- 化学方程式的意义 -【青果学院】

1/5单选题

难度：

1.

下列有关“2CO+O₂2CO₂”的质量关系，不正确的是

A	若56gCO参加反应，则消耗O₂的质量一定是32g
B	若16gO₂参加反应，则生成CO₂的质量一定是44g
C	若10gCO₂生成，则消耗的CO 和O₂的质量总和一定是10g
D	若5gCO与2gO₂混合点燃，则生成的CO₂的质量一定是7g

正确答案：RA==

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

2/5单选题

难度：

2.

从2H₂+O₂2H₂O中获取的信息错误的是

A	在反应前后，元素的种类没有变化
B	在常温下氢气与氧气混合就可以发生反应
C	4g氢气与32g氧气完全反应，可以生成36g水
D	在反应前后，氢原子和氧原子的数目都没有改变

正确答案：Qg==

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

3/5单选题

难度：

3.仅仅根据化学方程式 Na₂CO₃+2HCl═2NaCl+CO₂↑+H₂O，不能获得的信息是

A	反应进行得非常快
B	生成的CO₂是气态的
C	反应在常温下可以进行
D	反应物是Na₂CO₃和HCl

正确答案：QQ==

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

4/5单选题

难度：

4.化学方程式不能提供的信息是

A	哪些物质参加反应
B	在什么条件下发生反应
C	各物质之间的质量比
D	化学反应的快慢

正确答案：RA==

QeOAgeeUseWMluWtpuaWueeoi+W8j++8jOetieWPt+W3pui+ueeahOaYr+WPjeW6lOeJqe+8jOWPr+efpeWTquS6m+eJqei0qOWPguWKoOWPjeW6lO+8jOaVhemAiemhuemUmeivr++8jjxicj5C44CB55Sx5YyW5a2m5pa556iL5byP77yM562J5Y+35LiK5pa555qE5piv5Y+N5bqU5p2h5Lu277yM5Y+v55+l5Zyo5LuA5LmI5p2h5Lu25LiL5Y+R55Sf5Y+N5bqU77yM5pWF6YCJ6aG56ZSZ6K+v77yOPGJyPkPjgIHnlLHljJblrabmlrnnqIvlvI/vvIzlj6/orqHnrpflh7rlkITnianotKjkuYvpl7TnmoTotKjph4/mr5TvvIzmlYXpgInpobnplJnor6/vvI48YnI+ROOAgeeUseWMluWtpuaWueeoi+W8j++8jOaXoOazleW+l+WHuuWMluWtpuWPjeW6lOeahOW/q+aFou+8jOaVhemAiemhueato+ehru+8jjxicj7mlYXpgInvvJpE77yO

5/5单选题

难度：

5.化学方程式“2H₂+O₂

2H₂O”表示的意义是①氢气和氧气在点燃的条件下反应生成水②氢气、氧气、水三者之间的分子个数之比为2：1：2③4份质量的氢气和32份质量的氧气完全反应生成36份质量的水④氢气加氧气等于水．

A	①②④
B	②③④
C	①③④
D	①②③

正确答案：RA==

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