Ethanol data

ESTERFIT - Esterification of Acetic Acid with Ethanol. Data Fitting System... 

Figure 15.7. Adsorption of liquid mixtures on charcoal. Chloroform + acetone and benzene + ethanol. The ordinate gives the amount of each individual substance that is adsorbed, the abscissa the mol fraction of chloroform (mixed with acetone) or the mol fraction of benzene (mixed with ethanol). (Data gathered by Kipling. Adsorption from Solutions of Non-Electrolytes, 1965).

Fig. 13, C-solvent delocalization (as on silica for mixtures B/C, where B is benzene (A) O, ethyl ether Q, ethyl acetate V, acetone 0, tetrahydrofuran (B) D, acetonitrile V. isopropanol 0, ethanol. Data taken from Snyder and Glajch (/6). 

FIGURE 11.18 Extraction of hypericins from St. John s wort herb at 55°C with 70% ethanol. (Data generated by Botanicals International Extracts. Boulder, Colorado, 1999)... 

Vapor-liquid equilibrium data of polyesteramide in water and ethanol Data extract from Landolt-Bornstein VIII/6D3 Polymers, Polymer Solutions, Physical Properties and their Relations I (Thermodynamic Properties Equilibria of Ternary Polymer Solutions) ... 

Hammett plots. For phenylacetic acid ionization constants and for benzoic acid in ethanol. Data to generate these plots were taken from Bright W. L., and Briscoe, H. T. "The Acidity of Organic Acids in Methyl and Ethyl Alcohols." J. Phys. Chem., 37,787 (1933), and Dippy, J. F., and Williams, F. R. "Chemical Composition and Dissociation Constants of Mono-Carboxylic Acids. Part I. Some Substituted Phenylacetic Acids." /. Chem. Soc., 161 (1934). 

By examining the ethanol data more closely, it is seen that these results are not entirely consistent with the water structure mechanism. First of all, most physical properties suggest that the maximum structure in ethanol-water systems occurs around 10 mole %. The kinetic results show the forward rate constant to have already plateaued at 5 mole %. Also an order of magnitude calculation shows that the rate of collapse of the diffusion controlled encounter group to the dimer is 9 10 sec . This would imply that the solvent structure responsible for this rate must be stable for about 10 sec., which seems to be an unreasonably long time period. Furthermore, the effects observed in... 

Formal reduction potential, versus saturated calomel electrode, in aqueous ethanol. Data from Ref. 54. (See also Ref. 55.)... 

Fig. 2. Correlation of the log of the second-order rate constant for ArCH2Cl-t- I —> ArCHjI -i- Cl in acetone at 25°C (data of Fierens et al., 1955) versus the polorographic reduction potentials of ArCHO in 50% aqueous ethanol (data of Schmid and Heilbronner, 1954). Aris (1) 9-anthrancyl, (2) 1-naphthyl, (3) 2-naphthyl, and (4) phenyl.

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