Enter the frequency factor, activation energy, and temperature into the calculator to determine the rate constant using the Arrhenius equation.

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## Arrhenius Equation

The following formula is used to calculate the rate constant of a reaction using the Arrhenius euqation.

K = A * e^(-Ea/ R * T)

- Where K is the rate constant (sec^-1)
- A is the frequency factor (sec^-1)
- Ea is the activation energy (kj mol^-1)
- T is the temperature (K)
- R is the gas constant ( 8.314*10^-3 kj mol^-1 K^-1)

## Arrhenius Equation Definition

The arrhenius equation describes the relationship between the rate constant of a chemical reaction and the temperature, activation energy, and frequency factor.

## Arrhenius Equation Example

How to calculate rate constant using Arrhenius equation

**First, determine the frequency factor**Calculate or measure the frequency factor of the reaction.

**Next, determine the activation energy**You can use the calculator linked above to determine the activation energy of the reaction.

**Next, measure the temperature**Measure the temperature of the reaction in Kelvin.

**Finally, calculate the rate constant**Calculate the rate constant using the formula above and values from steps 1-3.

## FAQ

**What is the Arrhenius Equation?**

The arrhenius equation is a formula used to relate and calculate the rate constant of a chemical reaction to the temperature, activation energy, and frequency factor.

**What is the rate constant**

A rate constant is a constant that measures the rate at which a chemical reaction takes place.