The Pre-exponential Factor Up to this point, the pre-exponential term, A in the Arrhenius equation ( Equation 6.2.3.1.1), has been ignored because it is not directly involved in relating temperature and activation energy, which is the main practical use of the equation . Learn how to use the Arrhenius Equation to calculate activation energy, rate constant and equilibrium position from experimental data. The primer explains the equation , its derivation, its applications and its limitations with examples and diagrams. Arrhenius equation , mathematical expression that describes the effect of temperature on the velocity of a chemical reaction, the basis of all predictive expressions used for calculating reaction-rate constants. In the Arrhenius equation , k is the reaction-rate constant, A represents the frequency at which atoms and molecules collide in a way that leads to a reaction, E is the activation energy for the reaction, R is the ideal gas constant (8.314 joules per kelvin per mole), and T is the ... Learn how the Arrhenius equation relates the rate constant, activation energy and temperature of a chemical reaction. Find out the derivation, graph, applications and video of the equation formulated by Svante Arrhenius in 1889.
