Reaction Rate

Explore chemical kinetics using the Arrhenius equation. Observe how temperature and activation energy dictate the speed of a reaction [A] → [B].

Core Formulas

k = A · e-Ea / RT
Rate = k · [A]

Variables Control

100.0 s
400 K

Increases kinetic energy of particles.

40 kJ/mol

Energy barrier to start the reaction.

-20 kJ/mol

Negative = Exothermic, Positive = Endothermic.

1.0 M

Live Kinetics Output

RATE CONSTANT (k)

0.0299 s^-1

INITIAL RATE

0.0299 M/s

HALF-LIFE (t½)

23.2 s

Energy Profile

Reaction coordinate diagram

Reaction CoordinateEnergy (kJ/mol)EaΔHReactants [A]Products [B]Transition State

Concentration vs. Time

First-order reaction progress over 100s

0.00.51.01.52.00255075100Time (seconds)Concentration (M)[A] (Reactant)[B] (Product)