一道AP化学题If the temperature of a reaction is raised from 300K
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一道AP化学题
If the temperature of a reaction is raised from 300K to 320 K ,the reaction rate will increase by a factor of approximately ...
A.320/200 K
B.22/2 摄氏度
C.4
D.2
E.20
答案上说是we rely on the rule of thumb that the reaction rate doubles for each 10摄氏度 increase in temperature .A 20 摄氏度 increase in temperature will increase the rate by a factor of approximately 4.
什么叫rule of thumb?怎么推导出来的?
If the temperature of a reaction is raised from 300K to 320 K ,the reaction rate will increase by a factor of approximately ...
A.320/200 K
B.22/2 摄氏度
C.4
D.2
E.20
答案上说是we rely on the rule of thumb that the reaction rate doubles for each 10摄氏度 increase in temperature .A 20 摄氏度 increase in temperature will increase the rate by a factor of approximately 4.
什么叫rule of thumb?怎么推导出来的?
答案选C,这道题考察的是温度对反应速率的影响,历史上van't Hoff曾根据实验事实总结出一条近似规律,即温度没升高10K,反应速率大约增加2~4倍.这道题是温度上升了20K,所以答案应该选C.
一道AP化学题If the temperature of a reaction is raised from 300K
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