RESUMO

The equilibrium constants of salicylaldoxime in water at 25 degrees C, 0.5 M of ionic strength with NaCl and concentration of 1x10(-4) M were determined spectrophotometrically. The spectral data were processed using SQUAD program. The salicylaldoxime in acid medium has the value of pKa1=1.224+/-0.027. In alkaline medium the salicylaldoxime has the values of pKa2=8.551+/-0.024 and pKa3=11.728+/-0.016.

Assuntos

Ácido Clorídrico/química , Oximas/análise , Cloreto de Sódio/química , Temperatura , Concentração de Íons de Hidrogênio , Cinética , Concentração Osmolar , Oximas/química , Soluções , Espectrofotometria Ultravioleta