The number in front of the species in the balanced equation (default: 1)
Rate = -(1/n) × (Δ[Reactant]/Δt)
For reactants (consumed)
Rate = (1/n) × (Δ[Product]/Δt)
For products (formed)
What is Reaction Rate?
The reaction rate measures how quickly reactants are consumed or products are formed during a chemical reaction over time.
Stoichiometric Coefficient
The coefficient accounts for the balanced equation. If 2 mol of reactant produce 1 mol of product, their rate relationship differs by their coefficients.
Average vs Instantaneous
This calculator computes average rate over a time interval. Instantaneous rate requires calculus (derivative at a specific time).
Important Note
Reaction rate calculations represent average behavior over a time interval. Actual rates may vary during the course of a reaction. Factors such as temperature, concentration, catalysts, and surface area affect reaction kinetics.