Consider the equilibrium for the esterification of p-aminobenzoic acid to give ethyl p-aminobenzoate.
Write the mathematical expression for the equilibrium constant Keq, as a function of the concentrations of the products and reactants for this reaction.
Provide two specific ways whereyby the Le Chatelier principle may be applied to this equilibrium to drive the reaction to completion to the ester ethyl p-aminobenzoate
Which one of these techniques is given in the question above used in this experiment?