How to use the average reaction rate calculator
Find the average rate at which a reactant is consumed between two times. Enter concentration at time 1, concentration at time 2, time interval in the fields above; the average rate of consumption, rate in mm/min are computed instantly and plotted on the chart so you can see how the answer changes.
Common searches this calculator answers include “average reaction rate”, “rate of reactant disappearance”, “concentration change over time”, “calculate average reaction rate”, “find average rate of consumption”.
Formula
Variables
- A1 — Concentration at time 1 (M)
- A2 — Concentration at time 2 (M)
- t — Time interval (s)
Worked example
With concentration at time 1 = 0.8 M, concentration at time 2 = 0.5 M, time interval = 20 s, the calculator gives average rate of consumption ≈ 0.015 M/s; rate in mm/min ≈ 900 mM/min.
Frequently asked questions
What is the average reaction rate calculator used for?
Find the average rate at which a reactant is consumed between two times. It helps with questions such as “average reaction rate”, “rate of reactant disappearance”, “concentration change over time”.
What is the formula for the average reaction rate calculation?
Average rate of consumption (M/s) = (A1-A2) / t. Rate in mM/min (mM/min) = [Average rate of consumption] × 1000 × 60. Here A1 is concentration at time 1 (M), A2 is concentration at time 2 (M), t is time interval (s).
What inputs do I need for the average reaction rate calculator?
You need concentration at time 1 in M, concentration at time 2 in M, time interval in s. Each field is pre-filled with a typical example so you can see how the result responds as you edit the numbers.
How do I use the average reaction rate calculator?
Type values into the input fields. Results and the chart update instantly. Use Reset to restore the example values, Copy results to paste them elsewhere, or Share to copy a link that preserves your inputs.
Is the average reaction rate result exact?
Calculations use standard formulas and double-precision arithmetic, then display about seven significant figures. Real-world measurements carry uncertainty, so treat results as estimates unless your inputs are exact.