Zusammenfassung
Values of apparent molar volume and isentropic compressibility of sym. and asym. isomers of tetrabutylammonium bromide, namely tetra-n-butylammonium bromide, tetra-iso-butylammonium bromide, tetra-sec-butylammonium bromide, di-n-butyl-di-iso-butylammonium bromide and di-n-butyl-di-sec-butylammonium bromide, in aq. soln. were detd. from d. and speed of sound measurements. These ...
Zusammenfassung
Values of apparent molar volume and isentropic compressibility of sym. and asym. isomers of tetrabutylammonium bromide, namely tetra-n-butylammonium bromide, tetra-iso-butylammonium bromide, tetra-sec-butylammonium bromide, di-n-butyl-di-iso-butylammonium bromide and di-n-butyl-di-sec-butylammonium bromide, in aq. soln. were detd. from d. and speed of sound measurements. These properties were obtained as a function of molal concn. within the range of 0.01 < m/mol · kg-1 < 0.1 covering temps. from 278.15 ≤ T/K ≤ 293.15. The partial molar volumes and the apparent isentropic molar compressibility at infinite diln. were calcd. and their dependence on temp. examd. The results show that cations with sec-Bu chains have larger structural vols. compared to those with iso-Bu chains. In addn., cations with sec-Bu chains induce smaller structural changes in their hydration shell than the others.
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