A second-order reaction is one whose rate depends on the concentration of two reactants or on the square of the concentration of a single reactant. Mathematically, the rate law for a second-order reaction can be expressed as: \[ \text{Rate} = k[A][B] \] or \[ \text{Rate} = k[A]^2 \] Here, \( k \) is the rate constant, and \( [A] \) and \( [B] \) are the concentrations of the reactants.
