Acids, equilibrium & kinetics · SL/HL
Reaction Rate Calculator
Choose a concentration/quantity rate or 1/t. A stoichiometric coefficient can normalize a species rate to reaction rate.
Your values
Start with the example or enter your own values. Use a dot for decimals and e for scientific notation.
Calculated locally. No account or input upload.
Result & working
ExampleThe calculator is loading. The worked example is also shown below.
Step-by-step working
The formula
average species rate = |Δquantity|/Δt
reaction rate = species rate/ν
clock proxy ∝ 1/t
| Symbol | Meaning |
|---|---|
| ν | Stoichiometric coefficient when normalizing to a reaction rate. |
When to use this calculator
A tangent gives an instantaneous rate on a smooth graph; this calculator gives a secant/average rate between two values. In clock experiments, 1/t is a proxy only when the same observable threshold is used.
Worked example
The page opens with these example values. The result below is pre-generated for reference.
- |Δquantity| = |0.06 − (0.1)| = 0.04
- Species average rate = |Δquantity|/Δt = 0.001
- Reaction rate = species rate/ν = 0.001 / 1 = 0.001
0.001 mol dm⁻³ s⁻¹
Common mistakes
- Do not call an average over a long interval an instantaneous rate.