The slope in Arrhenius plot, is equal to:

The slope in Arrhenius plot, is equal to:
  1. $-\frac{E_{a}}{2.303 R}$
  2. $\frac{E_{a}}{R}$
  3. $-\frac{R}{2.303 E_{a}}$
  4. None of these

Solution

Arrhenius equation is given by
$k=A e^{-E_{a} /(2.303 R T)}$
Taking log on both sides, we get
$\log k=\log A-\frac{E_{a}}{2.303 R T}$
Arrhenius plot a graph between $\log k$ and $\frac{1}{T}$ whose
slope is $\frac{-E_{a}}{2.303 R}$.

Asked in: JEE-TOPICTESTS-CHEMISTRY

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