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The difference between the theoretical and experiment conversion in a reactor for a given reaction is an indication that the reactor is non-ideal. The reaction used in this experiment is the second order saponification reaction: NaOH + EtAc → NaAc + EtOH As the equilibrium of this reaction lies nearly at the point of completion the reverse reaction may be neglected. The rate constant, k, for this reaction is known from the literature. For the two reactants present in the same (stoichiometric) concentration CA, and initially CA0, the outlet concentration from a PFR is given by: For a CSTR, the outlet concentration is given by: -(1) 1 kC C C A0 A0 A + τ = where : τ = V/v = space time of reactor v = inlet volumetric flow rate to reactor V = volume of reactor The conversion X is defined as: Ao Ao A C C C X − = -(3). In terms of conductivity − ∞ − = λ λ λ λ o o t X -(4) where λo is the conductivity of 0.05M NaOH (at t=0, no reaction and ethylacetate do not contribute to the total conductivity), λ ∞ is the conductivity of 0.05M sodium acetate ( at t=infinity, conversion is 1.0 and hence on sodium acetate and ethanol are present; ethanol do not contribute to conductivity) and λt is conductivity at steady state in the reactor. The unit of conductivity is mS/cm. See Table 2 for the value of λ ∞ for 0.05M sodium acetate determined at various temperature. See Table 3 for the value of λo .for 0.05M NaOH....