The solubilities of rubidium nitrate in water, water plus methanol, and water plus ethanol have been determined using a simple accurate analytical method at different temperatures. In all cases, the presence of either...The solubilities of rubidium nitrate in water, water plus methanol, and water plus ethanol have been determined using a simple accurate analytical method at different temperatures. In all cases, the presence of either methanol or ethanol significantly reduced the solubility of rubidium nitrate in aqueous solution. A four-parameter equation was adjusted to the experimental data satisfactorily. Refractive index was also determined for the two ternary systems both in saturated and unsaturated solutions with varied salt concentrations. Furthermore the values for refractive index were correlated with the proportions of alcohol and the concentrations of salt.展开更多
The solubilities, densities and refractive indices for the four ternary systems ethylene glycol/glycerin＋ RbNOJCsNO3＋H20 were measured with mass fractions of ethylene glycol or glycerin in a range of 0 to 1.0 at 288...The solubilities, densities and refractive indices for the four ternary systems ethylene glycol/glycerin＋ RbNOJCsNO3＋H20 were measured with mass fractions of ethylene glycol or glycerin in a range of 0 to 1.0 at 288.15 and 298.15 K. In all the cases, the presence of either ethylene glycol or glycerin significantly reduces the solubilities of the rubidium nitrate and cesium nitrate in aqueous solution, but the refractive indices increase with the increase of mass fraction of either ethylene glycol or glycerin. The density, refractive index and solubility of the saturated ternary systems were correlated with each other via polynomial equations. In addition, the refractive indices and densities of unsaturated solutions were also determined for the four ternary systems with different salt concentrations, which were correlated with the salt concentration and proportion of ethylene glycol or glycerin in the solution.展开更多
基金Project supported by the National Natural Science Foundation of China （No. 20471035） and the Natural Science Foundation of Shaanxi Province （No. 2004B 17）.
文摘The solubilities of rubidium nitrate in water, water plus methanol, and water plus ethanol have been determined using a simple accurate analytical method at different temperatures. In all cases, the presence of either methanol or ethanol significantly reduced the solubility of rubidium nitrate in aqueous solution. A four-parameter equation was adjusted to the experimental data satisfactorily. Refractive index was also determined for the two ternary systems both in saturated and unsaturated solutions with varied salt concentrations. Furthermore the values for refractive index were correlated with the proportions of alcohol and the concentrations of salt.
基金Supported by the National Natural Science Foundation of China（No.21171111） and the Natural Science Foundation of Guangxi Province, China（No.GXNSF74114）.
文摘The solubilities, densities and refractive indices for the four ternary systems ethylene glycol/glycerin＋ RbNOJCsNO3＋H20 were measured with mass fractions of ethylene glycol or glycerin in a range of 0 to 1.0 at 288.15 and 298.15 K. In all the cases, the presence of either ethylene glycol or glycerin significantly reduces the solubilities of the rubidium nitrate and cesium nitrate in aqueous solution, but the refractive indices increase with the increase of mass fraction of either ethylene glycol or glycerin. The density, refractive index and solubility of the saturated ternary systems were correlated with each other via polynomial equations. In addition, the refractive indices and densities of unsaturated solutions were also determined for the four ternary systems with different salt concentrations, which were correlated with the salt concentration and proportion of ethylene glycol or glycerin in the solution.
