The enthalpies of dilution of aqueous boric acid solutions at several temperatures

Gary K. Ward; Frank J. Millero

doi:10.1016/S0021-9614(73)80108-9

The enthalpies of dilution of aqueous boric acid solutions at several temperatures

Gary K. Ward, Frank J. Millero

Ocean Sciences

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3 Scopus citations

Abstract

The enthalpies of dilution of boric acid in the molality range 0.7 to 0.1 mol kg^-1 have been measured at 283.15, 288.15, 298.15, 303.15, and 323.15 K. The enthalpy of dilution to infinite dilution, ΔH^∞_ail, of boric acid was found to vary linearly with molality m according to the relation(Δ H_{d i l}^∞ / c a l_{t h} m o l^{- 1} = - {- 137.79 + 6.79 (T / K - 273.15) - 0.19 (T / K - 273.15)²; + 0.002 (T / K - 273.15)³} m / m o l k g^{- 1},)where T is the temperature. The average deviation was ± 0.15 cal_thmol^-1 over the entire temperature range studied.

Original language	English (US)
Pages (from-to)	591-594
Number of pages	4
Journal	The Journal of Chemical Thermodynamics
Volume	5
Issue number	4
DOIs	https://doi.org/10.1016/S0021-9614(73)80108-9
State	Published - Jul 1973

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ASJC Scopus subject areas

Atomic and Molecular Physics, and Optics
Materials Science(all)
Physical and Theoretical Chemistry

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Ward, G. K., & Millero, F. J. (1973). The enthalpies of dilution of aqueous boric acid solutions at several temperatures. The Journal of Chemical Thermodynamics, 5(4), 591-594. https://doi.org/10.1016/S0021-9614(73)80108-9

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abstract = "The enthalpies of dilution of boric acid in the molality range 0.7 to 0.1 mol kg-1 have been measured at 283.15, 288.15, 298.15, 303.15, and 323.15 K. The enthalpy of dilution to infinite dilution, ΔH∞ail, of boric acid was found to vary linearly with molality m according to the relation(Δ Hd i l∞ / c a lt h m o l- 1 = - {- 137.79 + 6.79 (T / K - 273.15) - 0.19 (T / K - 273.15)2; + 0.002 (T / K - 273.15)3} m / m o l k g- 1,)where T is the temperature. The average deviation was ± 0.15 calthmol-1 over the entire temperature range studied.",

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N2 - The enthalpies of dilution of boric acid in the molality range 0.7 to 0.1 mol kg-1 have been measured at 283.15, 288.15, 298.15, 303.15, and 323.15 K. The enthalpy of dilution to infinite dilution, ΔH∞ail, of boric acid was found to vary linearly with molality m according to the relation(Δ Hd i l∞ / c a lt h m o l- 1 = - {- 137.79 + 6.79 (T / K - 273.15) - 0.19 (T / K - 273.15)2; + 0.002 (T / K - 273.15)3} m / m o l k g- 1,)where T is the temperature. The average deviation was ± 0.15 calthmol-1 over the entire temperature range studied.

AB - The enthalpies of dilution of boric acid in the molality range 0.7 to 0.1 mol kg-1 have been measured at 283.15, 288.15, 298.15, 303.15, and 323.15 K. The enthalpy of dilution to infinite dilution, ΔH∞ail, of boric acid was found to vary linearly with molality m according to the relation(Δ Hd i l∞ / c a lt h m o l- 1 = - {- 137.79 + 6.79 (T / K - 273.15) - 0.19 (T / K - 273.15)2; + 0.002 (T / K - 273.15)3} m / m o l k g- 1,)where T is the temperature. The average deviation was ± 0.15 calthmol-1 over the entire temperature range studied.

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10.1016/S0021-9614(73)80108-9