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Aqueous Electrolyte Ionization over Extreme Ranges as Simple Fundamental Relation with Density and Believed Universal; Sodium Chloride Ionization from 0^o to 1000^oC and to 1000 MPa (10000 Atm.)

William L. Marshall¹

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1. Oak Ridge National Laboratory, U.S.A. (guest scientist)

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Document Type:

Manuscript

Date:

Received 05 November 2008 03:05 UTC; Posted 06 November 2008

Subjects:

Chemistry, Earth & Environment

Tags:

• sodium chloride
• extreme conditions
• dielectric constant
• high temperature
• high pressure
• ionization
• water
• density

Abstract:

The chemical nature of aqueous electrolyte ionization is illustrated by a simple relationship with water as a reactant believed to correlate ionization of aqueous sodium chloride approaching infinite dilution over the entire range of temperature and pressure [0 to 1000^oC; 0.1 to 1000 MPa (10000 Atm)]. The derived equation accurately and smoothly describes the ionization constant of sodium chloride [K(NaCl)] in both water and water strongly diluted by inert solvent. Effects of water density on ionization are quantitatively and simply described that oppose conventional theory that ionization is a function only of dielectric constant, and theorists should apply this simplicity with density in understanding aqueous electrolyte ionization. There appears to be no substantive evidence for Pitzer’s earlier proposal (1983) that K(NaCl) with decreasing very low densities (if known) would diverge sharply downward by several orders of magnitude. Classical ionization theories are limited in universal application, and it seems that theory must adjust to this observed simple fundamental relationship.

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William L. Marshall on 21 November 2008 01:48 UTC

In Acknowledgments, I regret inadvertently misspelling the name of my colleague, Ariel A. Chialvo.

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This document is licensed to the public under the Creative Commons Attribution 3.0 License

How to cite this document:

Marshall, William L.. Aqueous Electrolyte Ionization over Extreme Ranges as Simple Fundamental Relation with Density and Believed Universal; Sodium Chloride Ionization from 0^o to 1000^oC and to 1000 MPa (10000 Atm.). Available from Nature Precedings <http://hdl.handle.net/10101/npre.2008.2476.1> (2008)

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