1973
DOI: 10.1039/f19736902112
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Thermodynamic properties of organic compounds in aqueous solutions. Apparent molal heat capacities of amines and ethers

Abstract: Apparent molal heat Capacities @cp of some cyclic monoethers and diethers as well as of open and cyclic secondary and tertiary amiiies and their chloride salts have been determined by adiabatic calorimetry in the temperature range 2O-6O0C, at concentrations 0.4-1 .O mol kg-l.In monofunctional compounds the contribution to Show more

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Cited by 41 publications
(17 citation statements)
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“…These reduced AC, : values, due to the presence of the ether function, support evidence cited for the structure-breaking effect of this group (37)(38)(39)(40). A similar but reduced effect is shown by the -OH group, consistent with the ability of this group to fit into water structure.…”
Section: Resultssupporting
confidence: 63%
“…These reduced AC, : values, due to the presence of the ether function, support evidence cited for the structure-breaking effect of this group (37)(38)(39)(40). A similar but reduced effect is shown by the -OH group, consistent with the ability of this group to fit into water structure.…”
Section: Resultssupporting
confidence: 63%
“…38,39 Several authors, in fact, have shown that the heat capacity changes could be calculated as the sum of group contributions. 38,39 Several authors, in fact, have shown that the heat capacity changes could be calculated as the sum of group contributions.…”
Section: Solubility Of Apolar Substances and S/h Compensationmentioning
confidence: 99%
“…For predictive purposes, as well as for understanding the hydration of the various functional groups on a given molecule, it is of interest to cvaluate the contribution of each group t o the measured quantity (20,(25)(26)(27)(28). From the present data, combined wit11 several others from the literature, a group contribution assignment has been carried out based on operations which are best visualized fro111 the following definitions (referring t o either 4,' or 4: ) : While these definitions iniply nonthermodynanlic group additivity assunlptions, they yield by sinlple arithmetic on the data in Table 1, values for A+O(H) and AdO(OH) which will be shown quite consistent.…”
Section: Discussionmentioning
confidence: 99%