The resulting fitted linear models obtained by least squares regression are shown in Table 3. Fig. 4 shows the experimental values of lnKeq versus 1/T for the reactions in pseudo-equilibrium state (dots), the values predicted by the corresponding fitted linear models (solid line) and the confidence intervals at the 95% confidence level for the values predicted by these models (dotted lines). For each model an F-test was performed to evaluate its accuracy from a statis- tical standpoint. In all cases the F-test proved that the linear models represented adequately reactions equilibrium data.