Simulation calculation of solubility of insoluble compound MmAa in complex system |
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| Authors: | Tian-zu Yang Du-chao Zhang and Jiang-hua Wu |
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| Affiliation: | School of Metallurgical Science and Engineering, Central South University, Changsha 410083, China |
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| Abstract: | A simulation calculation model for the solubility of insoluble compound M
m
A
a
in complex system was established. According to coordination equilibrium principle, relevant dissociation reaction, complexation
reaction, self-complexation reaction and protonation reaction during insoluble compound dissolving were considered and then
the mass balance equations about solubility calculation were obtained. In the case analysis, the solubility of silver chloride
in ammonia system was obtained by simulation calculation, and curved surface charts of thermodynamic equilibrium about the
total concentration of silver ions, pH and concentration of ammonia ions were drawn correspondingly. The results show that
under the conditions of room temperature and 6 mol/L ammonia concentration, the calculated solubility value of silver chloride
(34 g/L) is close to the actual value (31 g/L), demonstrating that this model is suitable for solubility calculation of insoluble
compound M
m
A
a
in the complex system. |
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| Keywords: | complex system insoluble compound solubility calculation model |
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