The project deals with the determination of ionization constants K a for ten acidic compounds derived from benzoyl acetone and dimedone by conductivity method in water and ethanol solvents. These acids are in forms of monoxime, dioxime and phenolic Schiff bases. The calculated relative constants K r for each acid are obtained by dividing the ionization constant in ethanol by its value in water and at constant temperatures. The K r values collected have less than unity. A direct linear plots are

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... obtained between pK a for any acid versus the dielectric constant of ethanol at the five different temperatures. The results are discussed in detail. ‫ﺍﻟﺒﻨﺯﻭﺍ‬ ‫ﺃﺤﻤﺎﺽ‬ ‫ﻤﻥ‬ ‫ﺍﻟﻤﺸﺘﻘﺔ‬ ‫ﺍﻷﺤﻤﺎﺽ‬ ‫ﺘﺄﻴﻥ‬ ‫ﺜﻭﺍﺒﺕ‬ ‫ﻋﻠﻰ‬ ‫ﻭﺍﻟﻤﺎﺀ‬ ‫ﺍﻻﻴﺜﺎﻨﻭل‬ ‫ﻤﺫﻴﺒﺎﺕ‬ ‫ﺘﺄﺜﻴﺭ‬ ‫ﺃﺴﻴﺘﻭﻥ‬ ‫ﻴل‬ . ..