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Citation: Zhang Zhong, Yao Yan, Song Peng-Sheng, Chen Jing-Qing. Isopiestic Determination of the Osmotic and Activity Coefficients of Aqueous Mixtures of Li₂SO₄ and MgSO₄[J]. Acta Physico-Chimica Sinica, ;1993, 9(03): 366-373. doi: 10.3866/PKU.WHXB19930315 shu

Isopiestic Determination of the Osmotic and Activity Coefficients of Aqueous Mixtures of Li₂SO₄ and MgSO₄

1.
Institute of Salt Lakes, Academia Sinica, Xining 810008

Received Date: 11 October 1991
Available Online: 15 June 1993

The osmotic coefficients of aqueous mixtures of Li_2SO_4 and MgSO_4 have been measured from 1.4 to 13.5 mol·(kg)~(-1) at 25 ℃ by using the isopiestic method. In the ranges of 0.2—8.7 and 0.6—12.7 mol·(kg)~(-1) the osmotic coefficients of Li_2SO_4 and MgSO_4 were also reported respectively. Ion interaction parameters of Pitzer model and Scatchard model have been calculated from these measurements. In comparison with Mckay-Perring method, the osmotic and activity coefficients for Li_2SO_4-MgSO_4 mixtures are fairly reliably represented by both Pitzer's equation and Scatchard's neutral electrolyte equation. The predicted solubilities for this system using Pitzer's approach show od agreement with experimental results.
- Osmotic coefficient; Activity coefficient; Pitzer equation; Scatchard equation; Mckay-Perring method; Solubility
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Isopiestic Determination of the Osmotic and Activity Coefficients of Aqueous Mixtures of Li2SO4 and MgSO4

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通讯作者: 陈斌, bchen63@163.com

Isopiestic Determination of the Osmotic and Activity Coefficients of Aqueous Mixtures of Li₂SO₄ and MgSO₄