Question

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

• A. In K vs. T
• B. In K vs. $\frac{1}{T}$
• C. < $\frac{I n K}{T}$ vs. $\frac{1}{T}$
• D. $\frac{I n K}{T}$ vs. T

Answer 1

Answer: (B)

Arrhenius equation $K=A.e^{- E a / R T}$
$lnK=lnA-\frac{E a}{R T}$
So, activation energy of reaction can be determined from the slope of lnK vs $\frac{1}{T}$ .

Using $y=mx+c$ we can find the value of $E_{a}$ from slope value.