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

Article Information

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

Authors: Man Singh

Journal: Pakistan Journal of Scientific and Industrial Research (Series B: Biological Sciences)

HEC Recognition History

Category	From	To
Y	2023-07-01	2024-09-30
Y	2022-07-01	2023-06-30
Y	2021-07-01	2022-06-30
Y	2020-07-01	2021-06-30
Y	1900-01-01	2005-06-30

Publisher: PCSIR Scientific Information Centre

Country: Pakistan

Year: 2006

Volume: 49

Issue: 3

Language: English

Keywords: : magnetic float densimeterAnton Paarheteromolecular interactionshydrophilic interactionshydrophobic interactionsmolar volumedensities of urea/methylureamelamine

Abstract

Densities (r) of urea (H NCONH ), methylurea (H C-HNCONH ), melamine (C N H ) in aqueous, alongwith
2&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; 2&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; 3&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; 2&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; 3&nbsp;&nbsp;&nbsp;&nbsp; 6&nbsp;&nbsp; &nbsp;6
mehtylurea in 0.05 mol kg-1&nbsp; aqueous urea solutions have been measured with magnetic float densimeter (MFD) with

f

&nbsp;

f&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; 2

&nbsp;

the accuracy value of 1x10-3 kg m-3. The data were used to calculate apparent molar volumes (Vf&nbsp;) that are compared with the values obtained with Anton Paar densimeter DMA 60/601 model. The values of the r and Vf&nbsp;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&nbsp; oconstants elucidated the heteromolecular interactions of &nbsp;-NH

2

&nbsp;

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

3

&nbsp;

electron donating -CH&nbsp; group of methylurea.

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

Article Information

HEC Recognition History

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Abstract

DefinePK

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

Article Information

HEC Recognition History

Categories

Abstract