Partial Molal Volumes of Asymmetric Iodides of Butyl-Triethyl-Ammonium in Aqueous Solutions at 298,15 K |
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Abstract: | Abstract Density measurements have been made on aqueous solutions of t-BuEt3NI, s-BuEt3NI, i-BuEt3NI, Bu4NI and Et4NI at 298,15 K from 0,01 to 0,05 m. The apparent molal volumes V02 calculated from the V 2,? (m) plots for the salts show a decrease value: n-BuEt3NI > i-BuEt3NI > s-BuEt3NI > t-BuEt3NI. The data analysis may suggest that the cations with the butyl isomers perform two groups: n-BuEt3N+ and i-BuEt3N+ with the highest V 2 0, and t-BuEt3N+ and s-BuEt3N+ similar to Et4N+ one. The peculiarities of the experimental observation may be interpreted as a consequence of the structural effect over the intermolecular forces that affect the solute-water interactions deeply. |
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Keywords: | Apparent molal volume asymmetric tetra-alkylammonium salts |
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