How Much How Fast & How Far E.2 Rate of Chemical Change (id: 3eb5e2c42)

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]
Reaction 1 has a larger frequ+uo(f 1v 7x+7jo xd6eebl.dyyl lrd3.ency fact50 (x- t,g.sbxm )afjog ;8vk1xceigsor, $A$, than reaction 2 but a smaller activation energy,$E_a$Which of the following graphs is correct?$ln$$\kappa$=$\frac{-E_a}{RT}$+$lnA$

A.
B.
C.
D.


参考答案:  C


本题详细解析:
C

The y-intercept =$lnA$so must be larger for reaction 1.
The gradient (slope) is equal to$\frac{-E_a}{R}$so, must be shallower (less negative) for reaction 1.
The question is in the “hard” category as students must know how to interpret an Arrhenius plot (or correctly interpret the given equation) and compare two reactions graphically.

微信扫一扫，分享更方便