Arrhenius Equation Calculator

The frequency factor (A) is a pre-exponential factor in the Arrhenius equation, representing the rate constant at which molecules collide with the correct orientation for a reaction to occur. It has the same units as the rate constant (sec^-1).

Activation energy (Ea) is the minimum amount of energy required for a reaction to proceed. A higher activation energy means that fewer molecules possess the necessary energy for the reaction, resulting in a slower reaction rate. A lower activation energy allows more molecules to react, increasing the reaction rate.

Temperature (T) is crucial in the Arrhenius equation because it affects the rate constant of a reaction. As temperature increases, the number of molecules with enough energy to overcome the activation energy barrier also increases, leading to a faster reaction rate. The temperature must be measured in Kelvin for the equation.

The gas constant (R) in the Arrhenius equation is a universal constant with a value of 8.314 * 10^-3 kj mol^-1 K^-1. It appears in many thermodynamic and kinetic equations and serves as a proportionality constant between energy, temperature, and the number of particles in a system.

Yes, the Arrhenius equation can be applied to non-gaseous reactions as well. Although the equation was initially developed for gas-phase reactions, it has been found to be applicable to reactions in various phases, such as liquid or solid, as long as the rate constant, activation energy, and temperature are appropriately defined.