【摘要】 研究了二元无机溶液的折射分析法,得到了联系二元无机溶液浓度、密度和折射率的方程,并用氯化钠溶液和溴化钾溶液对该方程进行了验证。配制了不同浓度的氯化钠溶液和溴化钾溶液各7种,在20℃下用阿贝折射仪测定各溶液的折射率和密度。将试验测量的折射率值和该方程的计算值进行了比较,发现两者吻合,最大差值在10-4量级上,在仪器的误差范围内。结果表明:该方程是获得不同浓度的二元无机溶液的折射率的简便而快速的方法。更多还原

【Abstract】 A mathematical equation relating concentration,density and refractivity of binary inorganic solutions was derived,and tested for its validity with aqueous solutions of sodium chloride and of potassium bromide of 7 different concentrations.Refractivity and density of these solutions were determined with the Abbe refractometer and densimeter at 20 ℃.As shown by the comparative study,the values of refractivity(or refractive index) of the binary solutions measured instrumentally were checked very well with the values found by calculation with the equation given,giving maximum deviation at the order of magnitude of 10-4,which is within the precision of the instrument.The proposed equation was valid for calculation of refractive index of binary inorganic solutions of different concentrations.更多还原