Density and viscosity of magnesium sulphate in formamide + ethylene glycol mixed solvents |
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| Authors: | A Alp A K Nain N Kumar and M Ibrahim |
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| Institution: | (1) Department of Chemistry, Jamia Millia Islamia (Central University), 110 025 New Delhi, India;(2) University Polytechnic, Jamia Millia Islamia (Central University), 110 025 New Delhi, India |
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| Abstract: | Densities (ρ) and viscosities (η) of different strengths of magnesium sulphate (MgSO4) in varying proportions of formamide (FA) + ethylene glycol as mixed solvents were measured at room temperature. The experimental
values of ρ and η were used to calculate the values of the apparent molar volume, (φ1,), partial molar volume, (φ1,ℴ) at infinite dilution,A- andB-coefficients of the Jones-Dole equation and free energies of activation of viscous flow, (Δμ
1
0*
) and (Δμ
2
0*
), per mole of solvent and solute respectively. The behaviour of these parameters suggests strong ion-solvent interactions
in these systems and also that MgSO4 acts as structure-maker in FA + ethylene glycol mixed solvents. |
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| Keywords: | Magnesium sulphate formamide-ethylene glycol mixture activation energy of viscous flow |
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