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Reaction Rate calculator
The average rate of a chemical reaction is how quickly the concentration of a substance changes with time.
Reaction Rate
Rate = Δc / Δt · Concentration Change · Time
Rate = Δc / Δt | Reaction Rate in mol/(L·s)
About the Reaction Rate calculator
The average rate of a chemical reaction is how quickly the concentration of a substance changes with time.
How to use the Reaction Rate calculator
- Enter the change in concentration Δc (mol/L) and the time interval Δt (seconds).
- Press Calculate.
Formula and method
Rate = Δc ÷ Δt, in mol/(L·s). Use the absolute value so the rate is positive.
Worked example
A concentration that changes by 0.5 mol/L in 100 s has an average rate of 0.005 mol/(L·s).
Tips
- Reaction rates usually rise with temperature, concentration and a catalyst.
- Instantaneous rates come from the slope of a concentration-time graph.
Frequently asked questions
How does temperature affect reaction rate?
Higher temperature means faster-moving particles and more collisions with enough energy, so the rate rises.