已知:
CH3CH2CH2
+HCl
CH3CH2CH3+Cl![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e85bda46cc51c938224d9165301e3896.png)
CH(CH3)2+HCl
CH3CH2CH2
+HBr
CH3CH2CH3+Br![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e85bda46cc51c938224d9165301e3896.png)
CH(CH3)2+HBr
(以上微粒均为气体状态)
下列说法正确的是
CH3CH2CH2
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e85bda46cc51c938224d9165301e3896.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f53fc60bb0371b098edce4add12f1c8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e85bda46cc51c938224d9165301e3896.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bd8f63650bdd577bfc8bee525a8a3f13.png)
CH3CH2CH2
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e85bda46cc51c938224d9165301e3896.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8513546cde8ee0814fd670942230e6e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e85bda46cc51c938224d9165301e3896.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1a7beb2e367c7c843f92bdf4a77c5a62.png)
(以上微粒均为气体状态)
下列说法正确的是
A.△H1=△H2+△H3-△H4 |
B.HCl和HBr的键能差可以表示为△H1-△H3 |
C.△H2、△H4为放热过程,△H2>△H4 |
D.升高温度,活化能降低,化学反应速率增大 |
更新时间:2020-11-13 10:48:15
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相似题推荐
单选题
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适中
(0.65)
【推荐1】相同温度和压强下,有如下热化学方程式,下列叙述正确的是
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6fbb5d519f981a09188dc18a765e8c43.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7e3396e9e066adc1d6e03779938058a9.png)
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![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac4bb5ab7f13c24e73afc40e9e4ab04b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cf57cc9a6c535625678b5dae4593fe31.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/77954dfaa04e6a6055da906f5d602e20.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6fbb5d519f981a09188dc18a765e8c43.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b69e8c2c64840fdbf84bc4d476a0689f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7e3396e9e066adc1d6e03779938058a9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c80bd85b3945d3339ad42e91c94e4932.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e3c901cdc5cb0ba2a8753c32d262d276.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0b32964f6484cb06d1f568aa085e19cd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac4bb5ab7f13c24e73afc40e9e4ab04b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/44c0b35f7ad15230a33468536af5f6c9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cf57cc9a6c535625678b5dae4593fe31.png)
A.![]() | B.![]() ![]() |
C.H-Cl键键能为1533![]() | D.![]() |
您最近一年使用:0次
【推荐2】实验室中利用固体KMnO4进行如图实验,下列说法正确的是
![](https://img.xkw.com/dksih/QBM/2021/9/14/2808057557893120/2808141250600960/STEM/2af940ad0bc2400d8908916b455f19e2.png?resizew=357)
![](https://img.xkw.com/dksih/QBM/2021/9/14/2808057557893120/2808141250600960/STEM/2af940ad0bc2400d8908916b455f19e2.png?resizew=357)
A.本实验中若用稀盐酸代替浓盐酸会减慢反应速率,但不影响单质H的生成量 |
B.气体H的量小于0.25mol |
C.根据盖斯定律,直接用KMnO4和浓盐酸反应的热效应与本实验中的总热效应相等 |
D.气体H是一种常见的氧化性气体,一般在反应中只表现氧化性 |
您最近一年使用:0次
单选题
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适中
(0.65)
名校
【推荐1】下列说法中,正确的是
A.降低温度能使化学反应速率减小,主要原因是降低了反应物分子中活化分子的百分数 |
B.![]() |
C.在恒容密闭容器中发生反应:![]() |
D.氢气燃烧热的热化学方程式为![]() ![]() |
您最近一年使用:0次
单选题
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适中
(0.65)
解题方法
【推荐2】已知反应:2NO(g) + Br2(g)
2NOBr(g) ΔH = -a kJ·mol-1(a﹥0),其反应机理如下:
① NO(g) + Br2(g)
NOBr2(g) 快
② NO(g) + NOBr2(g)
2NOBr(g) 慢
下列有关该反应的说法不正确 的是
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/de4ac184aef047428370bf877105fa50.png)
① NO(g) + Br2(g)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/de4ac184aef047428370bf877105fa50.png)
② NO(g) + NOBr2(g)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/de4ac184aef047428370bf877105fa50.png)
下列有关该反应的说法
A.该反应的速率主要取决于②的快慢 |
B.NOBr2是该反应的中间产物 |
C.正反应的活化能比逆反应的活化能小a kJ·mol-1 |
D.增大Br2(g)的浓度能增大活化分子百分数,加快反应速率 |
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