Equations for the determination of second order rate constants with th
e pulse overlay method, based on the application of empirical peak sha
pe equations are derived. This approach was then applied in an experim
ental study of the rection of pyridine with tetrachloroterephthaloyl c
hloride in a reversed-phase HPLC system. Rate constants evaluated from
reaction chromatograms were found to be in good agreement with those
obtained earlier for this reaction by Chu and Langer in chromatographi
c reactor experiments under pseudo-first order conditions.