pet sitting rate calculator
Calculate Rate Constant
About Rate Constant
The rate constant (k) is a proportionality constant that relates the reaction rate to the concentrations of reactants. It depends on temperature and the nature of the reaction.
Arrhenius Equation:
k = A × e^(-Ea/RT)
Rate Law:
Rate = k × [A]^n
Half-Life Relationships:
t₁/₂ = ln(2)/k (1st order)t₁/₂ = 1/(k[A]₀) (2nd order)
Where:
- k = Rate constant
- A = Pre-exponential factor
- Ea = Activation energy
- R = Gas constant (8.314 J/(mol·K))
- T = Temperature (K)
Units by Order:
• Zero order: M/s
• First order: s⁻¹
• Second order: M⁻¹s⁻¹
Applications:
• Chemical kinetics
• Reaction mechanism studies
• Industrial process optimization
• Environmental chemistry
Understanding rate constants is essential in chemical kinetics, reaction engineering, and process design.