16.2 Activation energy

What is the intercept on the y-axis when a graph of lnk is plotted against $\frac{1}{T}$ on the x-axis?

$\ln k=-\frac{E_a}{RT}+\ln A$

A.  lnA

B.  $-\frac{E_{\mathrm{a}}}{R}$

C.  $-\frac{R}{E_{\mathrm{a}}}$

D.   $E_{\mathrm{a}}$

What is the intercept on the y-axis when a graph of lnk is plotted against $\frac{1}{T}$ on the x-axis?

$\ln k=-\frac{E_a}{RT}+\ln A$

A.  lnA

B.  $-\frac{E_{\mathrm{a}}}{R}$

C.  $-\frac{R}{E_{\mathrm{a}}}$

D.   $E_{\mathrm{a}}$

Describe how the activation energy of this reaction could be determined.

Describe how the activation energy of this reaction could be determined.

Describe how the activation energy of this reaction could be determined.

The rate constant for a reaction doubles when the temperature is increased from 25.0 °C to 35 °C.

Calculate the activation energy, E_a, in kJ mol⁻¹ for the reaction using section 1 and 2 of the data booklet.

The rate constant for a reaction doubles when the temperature is increased from 25.0 °C to 35 °C.

Calculate the activation energy, E_a, in kJ mol⁻¹ for the reaction using section 1 and 2 of the data booklet.

The rate constant for a reaction doubles when the temperature is increased from 25.0 °C to 35 °C.

Calculate the activation energy, E_a, in kJ mol⁻¹ for the reaction using section 1 and 2 of the data booklet.

Which factor influences the value of the pre-exponential factor, A, in the Arrhenius equation, $k=A{e}^{-\frac{Ea}{RT}}$?

A.  Nature of reactants

B.  Temperature of reaction

C.  Activation energy of reaction

D.  Overall order of the reaction

Which factor influences the value of the pre-exponential factor, A, in the Arrhenius equation, $k=A{e}^{-\frac{Ea}{RT}}$?

A.  Nature of reactants

B.  Temperature of reaction

C.  Activation energy of reaction

D.  Overall order of the reaction