单选题 较易0.85 引用7 组卷614
符合如图所示的化学反应的热化学方程式是
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/26/efae7fb8-8167-404c-b3a2-58419d98b471.png?resizew=225)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/26/efae7fb8-8167-404c-b3a2-58419d98b471.png?resizew=225)
A.CO+H2O=CO2+H2ΔH=+41 kJ·mol-1 |
B.CO(g)+H2O(g)=CO2(g)+H2(g) ΔH=-41 kJ·mol-1 |
C.CO2(g)+H2(g)=CO(g)+H2O(g) ΔH=+41 kJ·mol-1 |
D.CO2(g)+H2(g)=CO(g)+H2O(g) ΔH=-41 kJ·mol-1 |
11-12高二下·安徽安庆·阶段练习
类题推荐
根据下图所示情况,判断下列说法中正确的是
![](https://img.xkw.com/dksih/QBM/2017/1/15/1625945536995328/1625945537224704/STEM/9b2b4bcbd88948de9cd5dac7177875a3.png)
![](https://img.xkw.com/dksih/QBM/2017/1/15/1625945536995328/1625945537224704/STEM/9b2b4bcbd88948de9cd5dac7177875a3.png)
A.其热化学方程式为:CO(g)+H2O(g)===CO2(g)+H2(g) ΔH=+41 kJ·mol-1 |
B.该反应为吸热反应 |
C.该反应为放热反应 |
D.当H2O为液态时,其反应热值小于41 kJ·mol-1 |
根据下图所示情况,判断下列说法中正确的是
![](https://img.xkw.com/dksih/QBM/editorImg/2022/7/24/bbbae70b-84ff-4cbf-bb74-2f54b1216d3a.png?resizew=288)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/7/24/bbbae70b-84ff-4cbf-bb74-2f54b1216d3a.png?resizew=288)
A.其热化学方程式为CO(g)+H2O(g)=CO2(g)+H2(g) ΔH=41kJ·mol-1 |
B.该反应为吸热反应 |
C.该反应为放热反应 |
D.当H2O为液态时,其反应热大于41 kJ·mol-1 |
CO(g)与H2O(g)反应过程的能量变化如图所示,下列说法正确的是
![](https://img.xkw.com/dksih/QBM/2022/4/22/2963490955927552/2963896537997312/STEM/1c976bfe-55a6-4e06-95f9-4495f9637ad9.png?resizew=305)
![](https://img.xkw.com/dksih/QBM/2022/4/22/2963490955927552/2963896537997312/STEM/1c976bfe-55a6-4e06-95f9-4495f9637ad9.png?resizew=305)
A.该反应为吸热反应 |
B.该反应的热化学方程式为:CO(g)+H2O(g)=CO2(g)+H2(g) ΔH=+41 kJ·mol−1 |
C.CO(g)和H2O(g)的总键能大于CO2(g)和H2(g)的总键能 |
D.1 mol CO(g)和H2O(l)反应生成1 mol CO2(g)和1 mol H2(g)放出热量小于41 kJ |
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