Reaction Rate Calculator
Works out how fast a reaction goes.
Rate
— mol/(L·s)
Share sends a link that reopens these numbers. Copy details pastes the full breakdown as a list.
Overall order —
Reading this —
The formula
rate = k × [A]^x × [B]^y average rate = |Δconcentration| ÷ Δt
The orders x and y come from experiment. The fields for the other method are ignored.
What to watch out for
Doubling a concentration doubles the rate in first order and quadruples it in second order.
Frequently Asked Questions
What is the rate with k = 0.5, [A] = 0.2 and [B] = 0.1, first order in each?
0.01 mol/(L·s).
What is the average rate if a concentration falls from 1 to 0.75 mol/L in 50 s?
0.005 mol/(L·s).