For a certain elementary reaction

CHEMISTRY · Single correct · A Level · Chemistry · Kinetics · Kinetics

Problem

For a certain elementary reaction, the energy of the reactants is

65\,\text{kJ}

, the transition state is

115\,\text{kJ}

, and the products are

90\,\text{kJ}

. Which of the following gives the correct numerical values for the forward activation energy

E_a^{\text{fwd}}

and the reverse activation energy

E_a^{\text{rev}}

? (a)

E_a^{\text{fwd}} = 50\,\text{kJ};\; E_a^{\text{rev}} = 75\,\text{kJ}

(b)

E_a^{\text{fwd}} = 25\,\text{kJ};\; E_a^{\text{rev}} = 50\,\text{kJ}

(c)

E_a^{\text{fwd}} = 50\,\text{kJ};\; E_a^{\text{rev}} = 25\,\text{kJ}

(d)

E_a^{\text{fwd}} = 65\,\text{kJ};\; E_a^{\text{rev}} = 50\,\text{kJ}