Heat capacities of binary and ternary aqueous solutions ofmyo-inositol, D-mannitol, and cyclohexanol. Heat capacity changes for interactions of the CH2 and CHOH groups

1983 ◽  
Vol 12 (5) ◽  
pp. 315-325 ◽  
Author(s):  
Ian R. Tasker ◽  
Robert H. Wood
Keyword(s):  
Heat Capacity ◽  
Aqueous Solutions ◽  
Heat Capacities ◽  
Heat Capacity Changes

Heat capacity changes and partial molal heat capacities of some di- and tripeptides in water

Biopolymers ◽  
1980 ◽  
Vol 19 (2) ◽  
pp. 263-272 ◽  
Author(s):  
K. P. Prasad ◽  
J. C. Ahluwalia
Keyword(s):  
Heat Capacity ◽  
Heat Capacities ◽  
Heat Capacity Changes ◽  
Partial Molal Heat Capacities

Protonation of azobenzene derivatives. I. Methyl orange and ortho-methyl orange

1973 ◽  
Vol 26 (5) ◽  
pp. 1005 ◽  
Author(s):  
PD Bolton ◽  
J Ellis ◽  
KA Fleming ◽  
IR Lantzke
Keyword(s):  
Heat Capacity ◽  
Methyl Orange ◽  
Aqueous Solutions ◽  
Standard Enthalpy ◽  
Acidity Constants ◽  
Temperature Range ◽  
Heat Capacity Changes ◽  
Azobenzene Derivatives

Thermodynamic acidity constants have been measured over the temperature range 5-50� for aqueous solutions of sodium 4?-dimethylaminoazobenzene- 4-sulphonate (methyl orange) and sodium 4?-dimethylaminoazobenzene-2- sulphonate (ortho-methyl orange). From these data values of the standard enthalpy, entropy, and heat capacity changes have been calculated for these compounds. These results are discussed in conjunction with previous spectrophotometric and other data with reference to the nature of the equilibrium systems involved in these protonation reactions. It is concluded that existing evidence does not allow an unequivocal assignment of the sites of protonation of these and related molecules.

Heat-capacity changes and partial molal heat capacities of several amino acids in water

1976 ◽  
Vol 5 (7) ◽  
pp. 491-507 ◽  
Author(s):  
K. P. Prasad ◽  
J. C. Ahluwalia
Keyword(s):  
Amino Acids ◽  
Heat Capacity ◽  
Heat Capacities ◽  
Heat Capacity Changes ◽  
Partial Molal Heat Capacities

scholarly journals Heat Capacity Changes of Some Sodium Alkylsulfates in Aqueous Solutions

1972 ◽  
Vol 45 (9) ◽  
pp. 2939-2940 ◽  
Author(s):  
Kunio Tamaki ◽  
Yoshio Isomura ◽  
Y\={o}ko Ohara
Keyword(s):  
Heat Capacity ◽  
Aqueous Solutions ◽  
Heat Capacity Changes ◽  
Sodium Alkylsulfates

Apparent molar heat capacities and volumes of aqueous solutions of several 1:1 electrolytes at elevated temperatures

1986 ◽  
Vol 64 (5) ◽  
pp. 926-931 ◽  
Author(s):  
Preet P. S. Saluja ◽  
Jacques C. LeBlanc ◽  
Harold B. Hume
Keyword(s):  
Heat Capacity ◽  
Aqueous Solutions ◽  
Room Temperature ◽  
Elevated Temperatures ◽  
Constant Pressure ◽  
Solubility Limit ◽  
Heat Capacities ◽  
Apparent Molar Heat Capacities ◽  
Flow Microcalorimeter ◽  
Good Agreement

The results of heat capacity (Cp) and density (d) measurements at 0.6 MPa and in the temperature range 298.15–373.15 K are presented for several 1:1 electrolytes in water. The flow microcalorimeter and densimeter used for these measurements were modificatons of the room-temperature designs. Data were obtained over concentrations ranging from 0.02 to 1.0 mol kg−1 (or to the solubility limit, whichever was lower). The heat capacity of a solution relative to that of water was measured with a precision of ±0.1 mJ K−1 g−1 at all temperatures. The density of a solution relative to that of water was measured with a precision of ±5 μg cm−3. These Cp and d results were used to calculate the apparent molar heat capacities, [Formula: see text], and volumes, [Formula: see text], at 298.15, 323.15, 348.15, and 373.15 K, at a constant pressure of 0.6 MPa. These results are in good agreement with available literature data.

Heat capacity changes in glass-forming aqueous solutions and the glass transition in vitreous water

1980 ◽  
Vol 84 (3) ◽  
pp. 268-272 ◽  
Author(s):  
C. A. Angell ◽  
J. C. Tucker
Keyword(s):  
Heat Capacity ◽  
Glass Transition ◽  
Aqueous Solutions ◽  
Glass Forming ◽  
Heat Capacity Changes

scholarly journals Heat Capacity Changes of Alkyl-substituted Ammonium Chlorides in Aqueous Solutions

1975 ◽  
Vol 48 (11) ◽  
pp. 3018-3020 ◽  
Author(s):  
Kunio Tamaki ◽  
Satoru Yoshikawa ◽  
Mitsuyoshi Kushida
Keyword(s):  
Heat Capacity ◽  
Aqueous Solutions ◽  
Heat Capacity Changes

ChemInform Abstract: HEAT CAPACITY CHANGES OF ALKYL-SUBSTITUTED AMMONIUM CHLORIDES IN AQUEOUS SOLUTIONS

1976 ◽  
Vol 7 (7) ◽  
pp. no-no
Author(s):  
KUNIO TAMAKI ◽  
SATORU YOSHIKAWA ◽  
MITSUYOSHI KUSHIDA
Keyword(s):  
Heat Capacity ◽  
Aqueous Solutions ◽  
Heat Capacity Changes

Heat capacities and enthalpies of fusion and transformation for solvates of some salts with dimethyl sulfoxide and dimethylformamide

1988 ◽  
Vol 53 (12) ◽  
pp. 3072-3079
Author(s):  
Mojmír Skokánek ◽  
Ivo Sláma
Keyword(s):  
Heat Capacity ◽  
Phase Transformation ◽  
Phase Transformations ◽  
Dimethyl Sulfoxide ◽  
Liquidus Temperature ◽  
Molar Heat Capacity ◽  
Solid Phase ◽  
Zinc Nitrate ◽  
Heat Capacities ◽  
Liquid Phases

Molar heat capacities and molar enthalpies of fusion of the solvates Zn(NO3)2 . 2·24 DMSO, Zn(NO3)2 . 8·11 DMSO, Zn(NO3)2 . 6 DMSO, NaNO3 . 2·85 DMSO, and AgNO3 . DMF, where DMSO is dimethyl sulfoxide and DMF is dimethylformamide, have been determined over the temperature range 240 to 400 K. Endothermic peaks found for the zinc nitrate solvates below the liquidus temperature have been ascribed to solid phase transformations. The molar enthalpies of the solid phase transformations are close to 5 kJ mol-1 for all zinc nitrate solvates investigated. The dependence of the molar heat capacity on the temperature outside the phase transformation region can be described by a linear equation for both the solid and liquid phases.

Sign in / Sign up

Export Citation Format

Share Document