New Data on Activity Coefficients of Potassium, Nitrate, and Chloride Ions in Aqueous Solutions of KNO3 and KCl by Ion Selective Electrodes | Zendy

Debasmita Dash | Zendy; Shekhar Kumar | Zendy; C. Mallika | Zendy; U. Kamachi Mudali | Zendy

Open Access

New Data on Activity Coefficients of Potassium, Nitrate, and Chloride Ions in Aqueous Solutions of KNO₃ and KCl by Ion Selective Electrodes

Author(s) -

Debasmita Dash,

Shekhar Kumar,

C. Mallika,

U. Kamachi Mudali

Publication year - 2012

Publication title -

isrn chemical engineering

Language(s) - English

Resource type - Journals

ISSN - 2090-861X

DOI - 10.5402/2012/730154

Subject(s) - activity coefficient , nernst equation , aqueous solution , chemistry , ion , potassium nitrate , ion selective electrode , chloride , analytical chemistry (journal) , potassium , nitrate , electrode , ionic bonding , inorganic chemistry , chromatography , selectivity , biochemistry , organic chemistry , catalysis

Ion selective electrodes (ISEs) are used to measure the single-ion activity coefficients in aqueous solutions of KNO 3 and KCl at 298.15 K against a double-junction reference electrode. The EMF responses of ISEs up to 0.01 m are plotted to obtain the slope and intercept values. The obtained slopes and intercepts are used in Nernst equation for higher concentrated solutions for calculation of individual ion activity coefficient. The mean ionic activity coefficients are estimated from single ion activity coefficient, and the obtained results are compared with the literature values.

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