Chemical Kinetics — Formula Sheet

Average Rate = −(1/a) Δ[A]/Δt = +(1/b) Δ[B]/Δt

Instantaneous Rate = −d[A]/dt or +d[B]/dt

Rate = k [A]^m [B]^n

Overall Order = m + n

k = (2.303/t) log([A]₀/[A])

t₁/₂ = 0.693/k

k = A e^(−Eₐ/RT)

log(k₂/k₁) = (Eₐ/2.303R)(1/T₁ − 1/T₂)

Rate = Change in concentration / Time taken

The rate law expresses the rate of a reaction as proportional to the concentrations of reactants raised to some powers: Rate = k[A]^x[B]^y.