Dissociation of Some Substituted Phenols in 50-Percent Aqueous Methanol as Solvent
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چکیده
The dissociation constants of the following substituted phenols in 50 wt percent methanol have been measured at 25 °C: o-nitrophenol, p-nitrophenol, 4-methyl-2-nitrophenol, 2,6-di chlorophenol , pentachlorophenol. The respective values found, expressed as pK values, are 7.91" 7.692 , 8.28" 7.680 , and 5.27.. The dissociation cons tants of 4-methyl-2-nitrophenol and pentachlorophenol, again exp ressed as pK values, have been measured in water as so lve nt a t 25 °C and found to be 7.59, and 4.820. respectively.
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