Question
The slope in Arrhenius plot, is equal to :
A.
$$ - \frac{{{E_a}}}{{2.303\,R}}$$
B.
$$\frac{{{E_a}}}{R}$$
C.
$$ - \frac{R}{{2.303\,{E_a}}}$$
D.
$${\text{None of these}}$$
Answer :
$$ - \frac{{{E_a}}}{{2.303\,R}}$$
Solution :
Arrhenius equation is given by
$$k = A{e^{ - \frac{{{E_a}}}{{RT}}}}$$
Taking log on both sides, we get
$$\log \,k = \log A - \frac{{{E_a}}}{{2.303RT}}$$
Arrhenius plot a graph between $$\log k$$ and $$\frac{1}{T}$$ whose slope is $$\frac{{ - {E_a}}}{{2.303R}}.$$