Heat capacities of liquids. Estimation of heat capacity at constant pressure and 25.deg., using additivity rules

1969 ◽  
Vol 14 (4) ◽  
pp. 461-465 ◽  
Author(s):  
Robert Shaw
Keyword(s):  
Heat Capacity ◽  
Constant Pressure ◽  
Heat Capacities ◽  
Additivity Rules

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 capacities of 4-methyl-2-pentanone, 2,6-dimethyl-4-heptanone, 1-hexanol, 1-heptanol, and 1-octanol in the temperature range 298-318 K

1989 ◽  
Vol 54 (3) ◽  
pp. 602-607 ◽  
Author(s):  
František Veselý ◽  
Petr Barcal ◽  
Milan Zábranský ◽  
Václav Svoboda
Keyword(s):  
Heat Capacity ◽  
Liquid State ◽  
Constant Pressure ◽  
Heat Capacities ◽  
Temperature Range ◽  
Selection Of

Molar heat capacities of 4-methyl-2-pentanone and 2,6-dimethyl-4-heptanone in the liquid state have been measured at a constant pressure over the temperature range 298.15 to 318.15 K. In order that the appropriateness of selection of literature data for correlation of the heat capacity as a function of temperature may be verified, results for three 1-alkanols (1-hexanol, 1-heptanol, and 1-octanol) have been measured over the same temperature range.

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.

Specific Heat Capacity at Constant Pressure of Ethanol by Flow Calorimetry

2012 ◽  
Vol 57 (6) ◽  
pp. 1700-1707 ◽  
Author(s):  
Taishi Miyazawa ◽  
Satoshi Kondo ◽  
Takuya Suzuki ◽  
Haruki Sato
Keyword(s):  
Heat Capacity ◽  
Specific Heat ◽  
Specific Heat Capacity ◽  
Constant Pressure ◽  
Flow Calorimetry
Sign in / Sign up

Export Citation Format

Share Document