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How Much How Fast & How Far E.2 Rate of Chemical Change (id: 3a1e191db)

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admin 发表于 2024-2-6 23:36:29 | 显示全部楼层 |阅读模式
本题目来源于试卷: How Much How Fast & How Far E.2 Rate of Chemical Change,类别为 IB化学

[单选题]
Which of the following reactions has the largest rate constant, $\kappa$, under the same reaction conditions?
$\kappa$=Ae$^{-Ea/RT}$


A. 30.0 $2\times 10^{12}$
B. 15.0 $2\times 10^{12}$
C. 30.0 $1\times 10^{12}$
D. 15.0 $1\times 10^{12}$


参考答案:  B


本题详细解析:
B
The rate constant increases with increasing A and decreases with increasing $E_a$.
This question is on the lower end of the medium-difficulty category as students should be familiar with the effect of these variables on $\kappa$, and are given the equation for assistance if needed.

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