Reaction Rate Calculator

Calculate reaction rates, rate constants, and half-life for chemical reactions. Input concentrations, time, and reaction orders for accurate kinetics calculations.

Calculator

Initial Concentration [A]₀ (M)

Initial concentration of reactant in mol/L

Final Concentration [A] (M)

Final concentration of reactant in mol/L

Time (min)

Time elapsed in minutes

Reaction Order (n)

Order of reaction with respect to reactant A

Results

Enter values and click Calculate to see results

About Chemical Kinetics

Chemical kinetics is the study of reaction rates and the factors that affect them.

Reaction Rate Laws:

Zero Order: Rate = k (independent of concentration)
First Order: Rate = k[A] (proportional to concentration)
Second Order: Rate = k[A]² (proportional to concentration squared)
General nth Order: Rate = k[A]ⁿ

Integrated Rate Laws:

First Order: ln([A]₀/[A]) = kt
Second Order: 1/[A] - 1/[A]₀ = kt
Half-Life: Time for concentration to decrease by 50%

Factors Affecting Rate:

Concentration: Higher concentration = faster rate
Temperature: Higher temperature = faster rate
Catalysts: Lower activation energy
Surface Area: More surface = faster rate

Applications:

Drug metabolism and elimination
Food spoilage and preservation
Industrial chemical processes
Environmental degradation
Battery life and performance