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NEET 2015

Exam: NEET
Year: 2015
Subject: Chemistry
Chapter: Chemical Kinetics

NEET 2015 · Chemistry · Chemical Kinetics

The activation energy of a reaction can be determined from the...

The activation energy of a reaction can be determined from the slope of which of the following graphs?

Options

A $lnKvs . T$
B $\dfrac{lnK}{T}vs . T$
C $lnKvs . \dfrac{1}{T}$
D $\dfrac{\text{T}}{( ln\text{K} )} \text{vs} . \dfrac{1}{\text{T}}$

Correct answer

C. $lnKvs . \dfrac{1}{T}$

Step-by-step solution

As per Arrhenius equation

K = A{e}^{- \dfrac{Ea}{RT}}

ln

K =

In

A - \dfrac{Ea}{RT}

Plot of ln

Kv/s\dfrac{1}{T}

will give
Slop = - \dfrac{Ea}{R}

<br />

∴ {E}_{a} = - R ( slope )

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