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Excess volumes of (a polar liquid + an aromatic hydrocarbon) at the temperature 298.15 K: I. (N,N-dimethylformamide + an aromatic hydrocarbon)

โœ Scribed by Wang Haijun; Zhu Chao; Chen Mingzhi; Li Hulin

Publisher
Elsevier Science
Year
1995
Tongue
English
Weight
392 KB
Volume
27
Category
Article
ISSN
0021-9614

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โœฆ Synopsis

Excess volumes have been measured by means of a continuous-dilution dilatometer for (N,N-dimethylformamide+benzene or toluene or o-xylene or m-xylene or p-xylene or ethylbenzene or styrene) at the temperature 298.15 K. V E is negative over the entire range of composition for all mixtures. =V E m (minimum)= and =V E m (x=0.5)= values of this series decrease in the sequence: C6H5CH . CH2 q C6H5CH3 q p-C6H4(CH3)2 1 C6H6 q m-C6H4(CH3)2 q o-C6H4(CH3)21C6H5CH2CH3. The results show that there are quite strong interactions between N,N-dimethylformamide molecules and aromatic-hydrocarbon molecules.

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## Excess volumes have been measured by means of a continuous-dilution dilatometer for or C6H5C2H5 or C6H5CH:CH2}] at the temperature 298.15 K. Values of V E m are negative over the entire range of composition for all mixtures. =V E m (minimum)= and =V E m (x=0.5)= values of this series decrease i