Reaction Rate Calculator
Calculate chemical reaction rate from concentration, temperature, and activation energy. Enter values for instant results with step-by-step formulas.
Reviewed by Daniel Agrici, Founder & Lead Developer
Reviewed by Daniel Agrici, Founder & Lead Developer
Formula
k = A × e^(-Ea/RT)
The Arrhenius equation relates reaction rate constant to temperature. R = 8.314 J/(mol·K). Higher temperature exponentially increases the rate.
Worked Examples
Example 1: Typical reaction
Problem:A=10¹³ s⁻¹, Ea=75 kJ/mol, T=298K
Solution:k = 10¹³ × e^(-75000/(8.314×298)) = 10¹³ × e^(-30.26) = 8.07×10⁻¹ s⁻¹
Result:k ≈ 0.807 s⁻¹
Reviewed by Daniel Agrici, Founder & Lead Developer · Editorial policy