Determination of the stability constants of the Mo(VI) complex with iminodiacetic acid in different sodium perchlorate aqueous solutions |
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Authors: | K Majlesi F Gharib M Arafati |
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Institution: | (1) Chemistry Department, Islamic Azad University, Science and Research Campus, Tehran, Hesarak, 1477893855, Iran;(2) Chemistry Department, Shahid Beheshti University, Tehran, Evin, Iran |
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Abstract: | The stability of molybdenum(VI) complex formed by iminodiacetic acid(IDA) has been studied at 25°C, pH = 6.0, and different
ionic strengths ranging from (0.3 to 1.0) mol dm−3 of sodium perchlorate. A combination of potentiometric and spectrophotometric techniques have been used based on the continuous
variations method. According to our investigations, the metal-to-ligand ratio is 1: 1. The Solver, Microsoft Excel 2000 powerful
optimization package, has been used to perform non-linear least-squares curve fitting. In order to obtain better consistency
between the experimental and calculated results, two empirical parameters have been introduced in a Debye-Huckel-type equation.
This equation enables us to calculate the values of stability constants in the desired range of ionic strength.
This article was submitted by the authors in English |
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