[单选题]
Reaction 1 has a larger fre
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:qgf+yvlta)1 *l fs-ih wn/ +jy factor, $A$, 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.
