Question

The Arrhenius equation incorporates all of the following ideas when relating the rate constant of a reaction to temperature except:

• A. the fraction of molecules possessing an energy greater than or equal to the activation energy.
• B. the overall energy requirements of the reaction.
• C. the number of collisions occurring per second.
• D. the fraction of collisions with the correct orientation.

Answer 1

Answer: (A)

the fraction of molecules possessing an energy greater than or equal to the activation energy.

From an Arrhenius equation, $k=A{e}^{\frac{{-E}_a}{RT}}$

$A=$ Frequency or Arrhenius factor.

$\therefore$ Arrhenius equation incorporates

(i) The overall energy requirement of the reaction

(ii) The number of collisions occurring per second

(iii) The functionof collisionswith the correct orientation. Butit does nottell us aboutthe fractionof molecules posing andenergy greaterthan or equal tothe activationenergy.