The thermodynamics of aqueous borate solutions I. Mixtures of boric acid with sodium or potassium borate and chloride期刊界 All Journals 搜尽天下杂志传播学术成果专业期刊搜索期刊信息化学术搜索

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The thermodynamics of aqueous borate solutions I. Mixtures of boric acid with sodium or potassium borate and chloride

Authors:	J M Simonson R N Roy L N Roy D A Johnson

Institution:	(1) Chemistry Division, Oak Ridge National Laboratory, 37831 Oak Ridge, TN;(2) Department of Chemistry, Drury College, 65802 Springfield, MO;(3) Present address: Department of Chemistry, Spring Arbor College, 49283 Spring Arbor, MI

Abstract:	Potentials for the cell without liquid junction $H_2 ,Pt\backslash B(OH)_3 (m_1 ), MB(OH)_4 (m_2 ), MCl(m_3 )\backslash AgClAg$ where M is sodium or potassium are reported over a range of ionic strength to I=3 mol-kg^–1 at 5 to 55°C. Total boron concentration in the solutions was restricted to low levels to minimize formation of polynuclear boron species. Cell potentials are treated with the Pitzer ion interaction treatment for mixed electrolytes, with linear ionic strength dependence assumed for the activity coefficient of undissociated boric acid. Trace activity coefficients of sodium and potassium borates in chloride media are calculated at various temperatures.

Keywords:	Borates aqueous thermodynamics electrolytes Harned cells
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