期刊论文

Volumetric Properties of Binary System C6H5CH3-DMF at 293.15 K

Hou Hai-Yun

中文

高等学校化学学报

Gaodeng Xuexiao Huaxue Xuebao/Chemical Journal of Chinese Universities

0251-0790

2009

30

7

1386-1391

10.3321/j.issn:0251-0790.2009.07.023

基金项目：国家自然科学基金（批准号：20673080）和西安工程大学科研启动基金（批准号：BS07047）资助.

本校为其他机构

利用Anton Paar DMA4500振动管密度计测量了293．15K时二元体系甲苯-N，N-二甲基甲酰胺（C6H5CH3-DMF）在C6H5CH3（摩尔分数0～1）中的溶液密度，利用最小二乘法关联了溶液密度与组成的函数关系，关联精度为±0．005kg／m^3。通过密度数据分别计算了二元体系中C6H5CH3和DMF的表观摩尔体积，并利用非线性最小二乘拟合法，分别拟合得到了优化的C6H5CH3和DMF的表观摩尔体积和摩尔分数的函数关系，以及C6H5CH3和DMF的表观摩尔体积和质量分数的函数关系．通过对函数关系的极限运算得到了C6H5CH3和DMF的极限偏摩尔体积、标准偏摩尔体积和摩尔体积．还计算了不同组分下体系的超额摩尔体积，数据可用四参...

The densities of binary solution C6H5CH3-DMF (toluene-N,N-dimethylformamide) at 293.15 K were measured by use of the Anton Paar 4500 vibrating-tube densimeter and the dependence of density on molar fraction was fitted by the least-square method with the standard deviation 0.005 kg/m(3), the molar fractions of toluene for the binary solution is from 0 to 1. The apparent molar volumes of C6H5CH3, and DMF in the binary system C6H5CH3-DMF were separately calculated from the density data, and the optimized dependences between apparent molar volumes and molar fractions and mass fractions were also d...