Bin-bin Jie, Chihtang Sah. Ion Product of Pure Water Characterized by Physics-Based Water Model[J]. Chinese Journal of Chemical Physics , 2016, 29(2): 167-170. doi: 10.1063/1674-0068/29/cjcp1507154
Citation: Bin-bin Jie, Chihtang Sah. Ion Product of Pure Water Characterized by Physics-Based Water Model[J]. Chinese Journal of Chemical Physics , 2016, 29(2): 167-170. doi: 10.1063/1674-0068/29/cjcp1507154

Ion Product of Pure Water Characterized by Physics-Based Water Model

doi: 10.1063/1674-0068/29/cjcp1507154
  • Received Date: 2015-07-16
  • Rev Recd Date: 2015-09-21
  • Pure water has been characterized for nearly a century, by its dissociation into hydronium (H3O)1+ and hydroxide (HO)1- ions. As a chemical equilibrium reaction, the equilibrium constant, known as the ion product or the product of the equilibrium concentration of the two ion species, has been extensively measured by chemists over the liquid water temper-ature and pressure range. The experimental data have been nonlinear least-squares fitted to chemical thermodynamic-based equilibrium equations, which have been accepted as the industrial standard for 35 years. In this study, a new and statistical-physics-based water ion product equation is presented, in which, the ions are the positively charged protons and the negatively charged proton-holes or prohols. Nonlinear least squares fits of our equation to the experimental data in the 0-100 ℃ pure liquid water range, give a factor of two better precision than the 35-year industrial standard.
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  • [1] B. Jie and C. Sah, J. Semiconduc. 34, 121001 (2013).
    [2] B. Jie and C. Sah, J. Semiconduc. 35, 021001 (2014).
    [3] B. Jie and C. Sah, J. Semiconduc. 35, 041001 (2014).
    [4] Chih-Tang Sah, Fundamentals of Solid-State Electronics, World Scienti c: Singapore, 175 (1991).
    [5] W. L. Marshall and E. U. Franck, J. Phys. Chem. Ref. Data 10, 295 (1981).
    [6] A. V. Bandura and S. N. Lvov, J. Phys. Chem. Ref. Data 35, 15 (2006).
    [7] E. Schmidt, Properties of Water and Steam in SI-Units (0-800 ℃ and 0-1000 bar), New York: Springer-Verlag, 192 (1969).
    [8] B. Jie and C. Sah, Bull. Am. Phys. Soc. March Meeting, (2015).
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Ion Product of Pure Water Characterized by Physics-Based Water Model

doi: 10.1063/1674-0068/29/cjcp1507154

Abstract: Pure water has been characterized for nearly a century, by its dissociation into hydronium (H3O)1+ and hydroxide (HO)1- ions. As a chemical equilibrium reaction, the equilibrium constant, known as the ion product or the product of the equilibrium concentration of the two ion species, has been extensively measured by chemists over the liquid water temper-ature and pressure range. The experimental data have been nonlinear least-squares fitted to chemical thermodynamic-based equilibrium equations, which have been accepted as the industrial standard for 35 years. In this study, a new and statistical-physics-based water ion product equation is presented, in which, the ions are the positively charged protons and the negatively charged proton-holes or prohols. Nonlinear least squares fits of our equation to the experimental data in the 0-100 ℃ pure liquid water range, give a factor of two better precision than the 35-year industrial standard.

Bin-bin Jie, Chihtang Sah. Ion Product of Pure Water Characterized by Physics-Based Water Model[J]. Chinese Journal of Chemical Physics , 2016, 29(2): 167-170. doi: 10.1063/1674-0068/29/cjcp1507154
Citation: Bin-bin Jie, Chihtang Sah. Ion Product of Pure Water Characterized by Physics-Based Water Model[J]. Chinese Journal of Chemical Physics , 2016, 29(2): 167-170. doi: 10.1063/1674-0068/29/cjcp1507154
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