Question

Which of the following statement are true regarding the log K vs. 1/T plot shown in the given diagram?

• A. Plot P shows that the energy of activation is independent of temperature
• B. Plot Q describes the behaviour of temperature dependence of energy of activation
• C. Arrhenius behaviour is described by P
• D. The slope of curve P gives the value $-\frac{E_a}{R}$

Answer 1

Answer: (A), (B), (C), (D)

The correct options are
A Arrhenius behaviour is described by P
B Plot P shows that the energy of activation is independent of temperature
C Plot Q describes the behaviour of temperature dependence of energy of activation
D The slope of curve P gives the value $-\frac{E_a}{R}$

Arrhenius equation is given as below:

$k=A{e}^{-E_a/RT}$

$logk=logA-E_a/RT$

So, the Arrhenius behaviour is described by P and the slope of curve P gives the value $-E_a/R$.

Here, the energy of activation is independent of temperature.

While plot Q describes the behaviour of temperature dependence of energy of activation.