Thermodynamic properties of sulfuric-acid solutions and their relation to the electromotive force and heat of reaction of the lead storage battery

Craig, D. Norman; Vinal, G. W.

doi:10.6028/jres.024.028

Cited by 26 publications

(21 citation statements)

References 10 publications

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“…The relative apparent molal heat capacity, tPe, in J·K -'.rnol-', taken from Craig and Vinal (1940) and Giauque, Hornung, Kunzler, and Rubin (1960) over the range from about 0.03 to 2.5 mol.kg-, is described by the equation…”

Section: Freezing Point and Other Measurementsmentioning

confidence: 99%

Activity and osmotic coefficients of aqueous sulfuric acid at 298.15 K

Staples

1981

Journal of Physical and Chemical Reference Data

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Articles you may be interested in TES buffer-induced phase separation of aqueous solutions of several water-miscible organic solvents at 298.15 K: Phase diagrams and molecular dynamic simulationsThe activity and osmotic coefficients of aqueous calcium chloride at 298.15 K A critical evaluation of the mean activity coefficient, r + , and osmotic coefficient, ¢>, of aqueous sulfuric acid at 298.15 K is presented for the-molality range of 0 to 28 mol.kg-1 • Osmotic coefficients were calculated from direct vapor pressure measurements, from isopiestic measurements or from freezing point depression measurements. Activity coefficients were calculated from electromotive force measurements of galvanic cells. A least-squares program was used to fit data from all sources using both ¢> and In r ± as functions of molality. A nine parameter equation describes the osmotic coefficient, the mean activity coefficient, and the excess Gibbs energy as a function of the onehalf power of molality. The scientific literature has been covered through January, 1980. Pa (23.767 Torr) (Stimson, 1969, and B T , the second vi rial coefficient for water, vapor, -922 cm 3 .mol-1 from the Steam Tables (Keenan et al ., 1969). Corrections for nonideality of water vapor are given by the second term on the right of eq (1). The gas constant, R, value of 8.31441 J 'moI-1 K -1 was used. The molecular weight of the solvent, M I , and the sum of cations and anions, v, were referenced previously (Staples and Nuttall, 1977).Early measurements of activities of sulfuric acid solu-MOLRLITY IMOL· KG FIGURE 4. Osmotic coefficient vs m l/2 (experimental and calculated).

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Section: Freezing Point and Other Measurementsmentioning

confidence: 99%

Activity and osmotic coefficients of aqueous sulfuric acid at 298.15 K

Staples

1981

Journal of Physical and Chemical Reference Data

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“…The differences of the total heat capacities determined during the hydrolysis lie between 3% and 15% ( Fig. 8(d)) compared to literature data (Craig and Vinal, 1940).…”

Section: Applications Of the Methodsmentioning

confidence: 78%

“…During the calibration procedure each solvent was alternatingly removed from the training set, each corresponding calibration subset may show inhomogeneously distributed data. The importance of an even data distribution of the input space for pattern recognition has already been discussed (Craig and Vinal, 1940). Dashed lines indicate the dosing time.…”

Section: Calibration Proceduresmentioning

confidence: 98%

Temperature oscillation calorimetry for the determination of the heat capacity in a small-scale reactor

Richner

Neuhold

Papadokonstantakis

et al. 2008

Chemical Engineering Science

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“…The following molar and apparent molal heat-capacities, in j/°C mole, were used for correcting the data to the process at 25 °C: (CH 3 ) 2 NB 2 H 5 (g) Cp = 117 [ 8 ], H 2 O(liq) Cp = 75. 3 [ 9 ], H 2 SO 4 (aq, 1 N ) ΦCp = 50 [ 10 ], (CH 3 ) 2 NH·H 2 SO 4 (aq, m = 0.04) ΦCp = 84 (estimated), H 3 BO 3 (aq, m = 0.08) ΦCp = −82 (estimated), H 2 (g) Cp = 28.8 [ 9 ], (CH 3 ) 2 NH(g) Cp = 63 (estimated).

The results, corrected to 25 °C, correspond to the average process:

…”

Section: Results and Calculationsmentioning

confidence: 99%