Question

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

• A. $\text{In} K$ vs $\cdot \frac{1}{ T }$
• B. $\frac{ T }{\text{In} K } \text{VS} \frac{1}{ T }$
• C. $\text{In}\, K \,vs \cdot T$
• D. $\frac{ \text{In K }}{ T } vs \cdot T$

Answer 1

Answer: (A)

Arrhenius equation
$K = A \cdot e ^{- Ea / RT } \Rightarrow \ell \text{nK}=\ell \text{n}A-\frac{ Ea }{ RT }$
so, activation energy of reaction can be determined from the slope of $\ell n\,K\,vs \frac{1}{T}$