1978
DOI: 10.1021/ed055p489
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Statistical effects and the evaluation of entropy differences in equilibrium processes. Symmetry corrections and entropy of mixing

Abstract: Evaluation of entropy differences in terms of the symmetry properties of the species involved in the equilibrium is not only a pedagogically useful exercise, it is of fundamental importance in the evaluation of empirical thermodynamic data.

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Cited by 67 publications
(46 citation statements)
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“…[15] As measured by 1 H integration, the deviation of the observed ratio of 1:2.3 (0.43) from the statistical ratio is small, indicating only a small preference for hetero-disulfide formation.…”
Section: Resultsmentioning
confidence: 87%
“…[15] As measured by 1 H integration, the deviation of the observed ratio of 1:2.3 (0.43) from the statistical ratio is small, indicating only a small preference for hetero-disulfide formation.…”
Section: Resultsmentioning
confidence: 87%
“…Thus, M 1-3 constitute F (+ ,+) ,M 4-7 constitute F (0, +) ,M 8-11 constitute F (+ ,À) ,M 12-14 constitute F (0,0) ,M 15-18 constitute F (0,À) and M [19][20][21] constitute F (À,À) .The only 6dimers with very low concentrationsw eret hose of the two families combining BBs with chargesoft he same sign (F (+ ,+) and F (À,À) ).…”
Section: Resultsmentioning
confidence: 99%
“…The statistical composition of the library,t aking into account the 1:2h omo/heterodimer ratios, [19] can be calculated as 11.1 % for each of the families F (+ ,+) ,F (0,0) ,a nd F (À,À) ,w hereas it is 22.2 %f or the families F (0, +) ,F (+ ,À) ,a nd F (0,À) .F igure 1b clearly shows that in the absence of salt the composition of the library is markedlyd ifferent from the statistical distribution:T he library is initially far from the statistically likelys ituation. However,t he increase of the salt concentration appears to asymptoticallya pproacht he percentage of each familyt ot he corresponding values of 11.1 and 22.2 %.…”
Section: Resultsmentioning
confidence: 99%
“…This effectively corresponds to the removal of entropic contributions from purely statistical effects, which is required prior to any attempt to relate thermodynamic data to structural parameters such as steric effects, nonbonded interactions, etc. (8,9).…”
Section: Ch2ch3mentioning
confidence: 99%