A reactor of rectangular cross-sectional, area was constructed of plexiglass to study the effect of an electric potential on the saponification of ethyl acetate with sodium hydroxide. Three different laminar region flow rates were used and the applied voltage was varied up to four kilovolts in one kilovolt increments for each flow rate. It was found that the apparent rate constant for the reaction was either increased or decreased depending on the voltage and flow rate used. The largest increase was a 4.2 percent change from zero voltage steady state conditions with an applied voltage of one kilovolt at a flow rate of six and a half milliliters per second. The largest decrease was a 14.4 percent change with an applied voltage of four kilovolts at flow rate of four milliliters per second.