题型:单选题 题类:常考题 难易度:普通
0min | 10min | 20min | 30min | 40min | 50min | 60min | ||
① | 10℃ | 1.1 | 0.90 | 0.80 | 0.73 | 0.68 | 0.65 | 0.65 |
② | 10℃ | a | 0.70 | 0.65 | 0.65 | 0.65 | 0.65 | 0.65 |
③ | 25℃ | 1.0 | 0.70 | 0.50 | 0.35 | 0.25 | 0.20 | 0.20 |
④ | 30℃ | 2.0 | 1.4 | 0.90 | 0.50 | 0.20 | 0.13 | 0.13 |
CO2(g)+H2(g)⇌CO(g)+H2O(g),其化学平衡常数K和温度t的关系如下表:
t℃ | 700 | 800 | 830 | 1000 | 1200 |
K | 0.6 | 0.9 | 1.0 | 1.7 | 2.6 |
回答下列问题:
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