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利用Pitzer理论讨论了硫酸盐水溶液中单个离子活度规律。在25℃下,实验测定了0.05-2mNa_2SO_4溶液及0.05-3mMgSO_4溶液中SO_4~(2-)离子活度系数,并计算了溶液中Na~+及mg~(2+)的离子活度系数,实验值与理论值相符。
Pitzer theory was used to discuss the single ion activity in sulfate aqueous solution. The activity coefficients of SO_4 ~ (2-) ion in 0.05-2mNa_2SO_4 solution and 0.05-3mMgSO_4 solution were measured experimentally at 25 ℃, and the ion activity coefficients of Na ~ + and Mg ~ (2+) were calculated. The experimental value is consistent with the theoretical value.