Chemistry Reaction Kinetics NUMS 2019
PMDC Verified Question 53 of 80
The influence of temperature on reaction rate is predicted by:
A
Arrhenius equation
B
Free energy change
C
Wander Waal's equation
D
Kinetic equation
Tap any option to test your recall and reveal the step-by-step Propolis autopsy.

Propolis Cognitive Error Autopsy

Official Correct Choice:
Option A: Arrhenius equation
Concept:

The mathematical relationship between the rate constant of a reaction and absolute temperature was formulated by Svante Arrhenius.

Formula:

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

Solution:

  • The Arrhenius equation explicitly links the rate constant (\( k \)) to Temperature (\( T \)).
  • It predicts that as temperature increases, the exponential term becomes larger, exponentially increasing the rate of the reaction.


Why other options are incorrect:

Van der Waals equation (Wander Waal's) relates to real gases. Free energy change (\( \Delta G \)) predicts spontaneity, not kinetic rate. 'Kinetic equation' is a generic term without specific mathematical bearing on temperature dependence.

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