硫酸亚铁-硫酸铁-硫酸溶液密度和粘度的测量

Measurement of densities and viscosities for mixed solutions of FeSO_4-Fe_2(SO_4)_3-H_2SO_4

利用密度瓶和毛细管粘度计测量了在不同温度(294.75—341.15 K)、不同氢离子浓度(0.1—8 mol/L)和不同总铁离子浓度(0.1—0.8 mol/L)的FeSO4-Fe2(SO4)3-H2SO4溶液的密度和粘度。利用最小二乘法分别拟合回归出了FeSO4-Fe2(SO4)3-H2SO4溶液的密度和粘度与温度、氢离子浓度、亚铁离子浓度、铁离子浓度的关联式。密度关联式对实测值的最大相对误差在±0.88%以内,均方差为2.78×10-3。粘度关联式的相对误差不大于±3%,均方差为0.023 8。

The densities and viscosities for solutions of FeSO4-Fe2 （SO4 ）3-H2SO4 were determined with density bottle and capillary viscosimeter at 294.75-341.15 K, 0.1-0. 8 mol/L of hydrogen ion and 0.1-0. 8 mol/L of ferric and ferrous ion. The correlation of the densities and viscosities of mixed solutions with temperatures, concentration of hydrogen ion, concentration of ferric ion and concentration of ferrous ion was determined by the method of the least-square best fit. The maximum relative error of the correlation of the densities is ± 0.88%, and the mean square error is 2.78 × 10 ^-3. The maximum relative error of the correlation of the viscosities is ±3%, and the mean square error is 0. 023 8.