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| Equilibrium of Co(II) Complex in Co(II)-NH3-Cl--H2O System |
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Received:April 16, 2012
Revised:May 02, 2012
Accepted:May 02, 2012
Published Online:October 23, 2012
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| DOI：10.3969/j.issn.1007-7545.2012.11.001 |
| KeyWord:Thermodynamics; Co(II); ammonia; complex equilibrium; double equilibrium method |
| Author | Institution |
| Liao Yuan-hang |
福建金山黄金冶炼有限公司 |
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| Abstract: |
| The dissolution law of Co(Ⅱ) complex in Co(II)-NH3-Cl--H2O system was studied with double equilibrium method (mass equilibrium and electronic charge equilibrium). Thermodynamic diagrams were plotted via calculation. The relationship between equilibrium concentration of each species and concentration of ammonia and chloride ion was revealed. The results show that Co(OH)2(S) is the only existing solid-phase item in the system. The theoretic calculation is verified via experiment. The error between theoretical calculation and experiment is as low as 10.13%. |
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