Spectrophotometric Determination of Sedimentation Rates of CuS and BaS in Aqueous Media
Resumen
The sedimentation rates of CuS and BaS were determined by measuring the % transmittance with time of the metal sulphide precipitates in aqueous media. The results showed that the sedimentation rates of CuS decrease with increase in [Cu2+] at constant [S2-] and also with increase in [S2-] at constant [Cu2+]. On the other hand, the sedimentation rates of BaS increase with increase in [Ba2+] at constant [S2-] and also with increase in [S2-] at constant [Ba2+] respectively, which showed a new trend of sedimentation rate. The overall sedimentation orders of CuS and BaS precipitates were first and second order sedimentations respectively implying that the processes were dependent on the precipitate concentrations.
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Referencias
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