{"title":"尿素和醇水溶液中的相互作用。25°C时的剩余焓","authors":"Guido Barone, Giuseppina Castronuovo, Vittorio Elia","doi":"10.1016/0378-4487(82)80052-6","DOIUrl":null,"url":null,"abstract":"<div><p>The heats of dilution of ternary aqueous solutions of urea and alcohols have been determined at 25°C. From the experimental data the values of the excess enthalpies H<sub>ij</sub><sup>E</sup> and of the pair enthalpy interaction coefficients h<sub>ij</sub> have been evaluated and compared with the data reported in the literature. The values of the h<sub>ij</sub> coefficients at 25°C are all positive and depend on the length and branching of the alkyl chain of the alcohols. The results are discussed in terms of the effects of a chaotropic agent”, as urea, on the cospheres of mainly hydrophobic such as alcohols.</p></div>","PeriodicalId":100049,"journal":{"name":"Advances in Molecular Relaxation and Interaction Processes","volume":"23 4","pages":"Pages 279-286"},"PeriodicalIF":0.0000,"publicationDate":"1982-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1016/0378-4487(82)80052-6","citationCount":"9","resultStr":"{\"title\":\"Interactions in aqueous solutions of urea and alcohols. Excess enthalpies at 25°C\",\"authors\":\"Guido Barone, Giuseppina Castronuovo, Vittorio Elia\",\"doi\":\"10.1016/0378-4487(82)80052-6\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"<div><p>The heats of dilution of ternary aqueous solutions of urea and alcohols have been determined at 25°C. From the experimental data the values of the excess enthalpies H<sub>ij</sub><sup>E</sup> and of the pair enthalpy interaction coefficients h<sub>ij</sub> have been evaluated and compared with the data reported in the literature. The values of the h<sub>ij</sub> coefficients at 25°C are all positive and depend on the length and branching of the alkyl chain of the alcohols. The results are discussed in terms of the effects of a chaotropic agent”, as urea, on the cospheres of mainly hydrophobic such as alcohols.</p></div>\",\"PeriodicalId\":100049,\"journal\":{\"name\":\"Advances in Molecular Relaxation and Interaction Processes\",\"volume\":\"23 4\",\"pages\":\"Pages 279-286\"},\"PeriodicalIF\":0.0000,\"publicationDate\":\"1982-08-01\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"https://sci-hub-pdf.com/10.1016/0378-4487(82)80052-6\",\"citationCount\":\"9\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"Advances in Molecular Relaxation and Interaction Processes\",\"FirstCategoryId\":\"1085\",\"ListUrlMain\":\"https://www.sciencedirect.com/science/article/pii/0378448782800526\",\"RegionNum\":0,\"RegionCategory\":null,\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"\",\"JCRName\":\"\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"Advances in Molecular Relaxation and Interaction Processes","FirstCategoryId":"1085","ListUrlMain":"https://www.sciencedirect.com/science/article/pii/0378448782800526","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"","JCRName":"","Score":null,"Total":0}
Interactions in aqueous solutions of urea and alcohols. Excess enthalpies at 25°C
The heats of dilution of ternary aqueous solutions of urea and alcohols have been determined at 25°C. From the experimental data the values of the excess enthalpies HijE and of the pair enthalpy interaction coefficients hij have been evaluated and compared with the data reported in the literature. The values of the hij coefficients at 25°C are all positive and depend on the length and branching of the alkyl chain of the alcohols. The results are discussed in terms of the effects of a chaotropic agent”, as urea, on the cospheres of mainly hydrophobic such as alcohols.