Chemical Kinetics

The rate of a reaction

The rate of a reaction is defined as the change in concentration of reactants or products per unit time. It can be expressed as: Rate = -Δ[R]/Δt (for

Rate law expresses the relationship between

Rate law expresses the relationship between reaction rate and concentration of reactants: Rate = k[A]ˣ[B]ʸ, where k is the rate constant and x, y are

The order of a reaction

The order of a reaction is the sum of powers of concentration terms in the rate law (x + y in Rate = k[A]ˣ[B]ʸ). Individual orders (x, y) show sensiti

Molecularity is the number of molecules

Molecularity is the number of molecules that participate in an elementary reaction step. It can be 1 (unimolecular), 2 (bimolecular), or 3 (termolecul

These equations relate concentration to time

These equations relate concentration to time directly. For zero-order: [R] = [R]₀ - kt; For first-order: ln[R] = ln[R]₀ - kt or [R] = [R]₀e⁻ᵏᵗ. These