Abstract
The electrical conductivities of aqueous solutions of sodium salts of cinnamic acid, 4-hydroxycinnamic (p-coumaric) acid, 3,4-dihydroxycinnamic (caffeic) acid, 4-hydroxy-5-methoxycinnamic (ferulic) acid and 3,5-dimethoxy-4-hydroxycinnamic (sinapinic) acid were measured over the temperature range (T) of 288.15 to 318.15 K at 5 K intervals. The limiting molar conductivity Λmo and ionic association constants (KAo) were obtained using the low concentration Chemical Model (lcCM). The limiting ionic conductivity and the Eyring's activation enthalpy of charge transport of the investigated anions were determined.
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