Results 241 to 250 of about 162,762 (296)

Solution calorimetry of nitrosonium salts

Journal of the Chemical Society, Dalton Transactions, 1980
The standard enthalpies of formation of crystalline [NO][ClO4], [NO][HSO4], and [NO]2[S2O7] have been determined as 59.0, –680.3, and –1 041.0 kJ mol–1 respectively, based on enthalpies of reaction with aqueous base. The discrepancies between these and some previously published values are discussed in terms of the competing neutralisation and ...
Arthur Finch, Peter N. Gates, Terence H. Page   +2 more
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Solution calorimetry experiments for physical chemistry

Journal of Chemical Education, 1988
These authors share a lab they developed to fill the void in laboratory experiments for thermodynamic measurements in solutions.
Deborah A. Raizen, B. M. Fung, Sherrill D. Christian   +2 more
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Isoperibol Reaction-Solution Calorimetry

2008
The determination of enthalpies of reaction in solution, using isoperibol reaction-solution calorimetry, is often the easiest and most accurate method of determining enthalpies of formation of compounds that cannot be studied by combustion calorimetry.
José A. Martinho Simões, Manuel Minas da Piedade   +1 more
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Applications of Calorimetry to Nonelectrolyte Solutions

Journal of Chemical & Engineering Data, 1996
This paper describes the application of calorimetry to the measurement of the excess molar enthalpies for binary mixtures of nonelectrolytes. Batch, displacement, and flow calorimeters are described, using as examples the batch calorimeter of McGlashan;, the displacement calorimeters of Van Ness and of Marsh and Stokes, and the flow calorimeters of ...
J. Bevan Ott, Jadwiga T. Sipowska
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Calorimetry Studies of Chlorpromazine Hydrochloride in Solution

Langmuir, 2000
The self-association of the tranquilizer chlorpromazine hydrochloride in aqueous solution was studied. Using isothermal titration calorimetry, the critical micelle concentration and solvent−micelle interactions were evaluated as a function of temperature, ionic strength, and pH.
Yoshihito David Saito, Shandiz Tehrani, Mariko M. Okamoto, Henry H. Chang, Phoebe Dea   +4 more
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Solutions calorimetry apparatus for undergraduate teaching

Journal of Chemical Education, 1991
Because many students do not understand the function of the bridge, these authors designed an activity that provides access to each of its components.
Stephen W. Bigger, Geoffrey A. Meilak, Bruce Verity   +2 more
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Calorimetry of model biomolecules in aqueous solution

Thermochimica Acta, 1985
Abstract A survey of the thermodynamic properties of aqueous solutions of model compounds is presented. The review is focused on the analysis of the thermal data obtained from dilution and mixing experiments monitoring weak interactions occurring between solvated solute species.
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Low‐temperature calorimetry of biological macromolecule solutions

Journal of Polymer Science: Polymer Symposia, 1981
AbstractThe thermal properties of several biopolymeric (DNA, RNAse, Folch‐Pi apoprotein)–water systems have been investigated by low‐temperature adiabatic differential scanning microcalorimetry. Determination of the heat change and temperature of fusion of the water and eutectic mixture allowed resolution of the various water states in native polymer ...
E. L. Andronikashvili, G. M. Mrevlishvili, G. Sh. Japaridze, V. M. Sokhadze, D. A. Tatishvili   +4 more
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Characterisation of polyethylene glycols using solution calorimetry

International Journal of Pharmaceutics, 1991
Abstract The heats of solution of a range of polyethylene glycols (PEGs) have been measured using samples prepared under various heating and cooling protocols. The values obtained were shown to be highly sensitive to both PEG molecular weight and to the thermal history of the sample.
D.Q.M. Craig, J.M. Newton
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Sample holders for solution calorimetry

Journal of Physics E: Scientific Instruments, 1968
Two types of sample holder employing microscope cover slips are described, having the advantages of cheap and rapid construction, convenient loading and negligible heat of opening.
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