4. There is a two components revisable reaction CH3COOC2H5+C4H9OH ⇌ CH3COOC4H9+C2H5OH, in which C4H9OH is fed to a vat containing CH3COOC2H5 initially. This reaction is first order for both reactants. Please
申論題內容
(b) the expression of conversion (Xe) at equilibrium (5 points).