# The intensity changes at xA cm

Scheme 2. Probable distributions of reactants among the pseudo-phases of CTAB reverse micelle.Figure optionsDownload full-size imageDownload as PowerPoint slide

Therefore, Eq. (1) is reduced toequation(2)r=kw[S]w.r=kwSw.

The distribution equilibrium of the substrate between interface and the water pool is defined asequation(3)Kiw=SwSiW.

Considering that the total concentration of the substrate Fe(II) would be the sum of the concentrations in the two pseudo-phases i.e., [S]t = [S]w + [S]i.

Applying Eqs. (2) and (3), the AR-42 HDAC of kobs can be formulated asequation(4)kobs=kwKiwKiw+W.

Rearranging the Eq. (4) asequation(5)1kobs=1kw+1kwKiw⋅W.

Fig. 3 reveals the expected linear representation of 1/kobs vs. W indicating the reaction to be occurred in the central aqueous core of the micro-emulsion. The value of kw and Kiw obtained from the intercept and the slope of the curve is codominance given in the figure.

Fig. 3. Variations of 1/kobs with the size of water pools (W) in CTAB/1-butanol/n-heptane/water reverse micelle at a fixed Z.[Fe(II)]e = 0.56 × 10− 3 mol L− 1, [CTAB] = 0.2 mol L− 1, [HO−]e = 0.05 mol L− 1, Z = 4 at 303 K.Figure optionsDownload full-size imageDownload as PowerPoint slide