Determination of Densities of Amino Compounds for Molar Volumes in Aqueous Solutions with Magnetic Float Densimeter at Various Temperatures

Authors

  • Man Singh chemistry Research Laboratory, Deshbandhu College, University of Delhi, New Delhi-110019, India

Keywords:

: magnetic float densimeter, Anton Paar, heteromolecular interactions, hydrophilic interactions, hydrophobic interactions, molar volume, densities of urea/methylurea, melamine

Abstract

Densities (r) of urea (H NCONH ), methylurea (H C-HNCONH ), melamine (C N H ) in aqueous, alongwith

2                     2                                        3                                2                                    3     6    6

mehtylurea in 0.05 mol kg-1  aqueous urea solutions have been measured with magnetic float densimeter (MFD) with

f

 

f                                                                                                   2

 

the accuracy value of 1x10-3 kg m-3. The data were used to calculate apparent molar volumes (Vf ) that are compared with the values obtained with Anton Paar densimeter DMA 60/601 model. The values of the r and Vf parameters were regressed and extrapolated to zero concentration (m = 0), for their limiting densities (ro) and limiting molar volumes (V o) alongwith their respective slope values. The values of the ro and V  oconstants elucidated the heteromolecular interactions of  -NH

2

 

group, and it was noted that -NH     in different chemical compounds influenced interactions with water, especially with

3

 

electron donating -CH  group of methylurea.

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Published

2006-06-26

How to Cite

Singh, M. (2006). Determination of Densities of Amino Compounds for Molar Volumes in Aqueous Solutions with Magnetic Float Densimeter at Various Temperatures. Biological Sciences - PJSIR, 49(3), 160–169. Retrieved from https://v2.pjsir.org/index.php/biological-sciences/article/view/1142