The Asian Journal of Experimental Chemistry

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Dissociation/Association Behaviour of Alkaline Earth Metal Laurates at Different Temperatures


Affiliations
1 Department of Chemistry, D.A.V. (P.G.) College, Muzaffarnagar (U.P.), India
2 Central Building Research Institute, CBRI (A Constitutent Establishment of CSIR), Ministry of Science and Technology (Government of India), Roorkee (Uttarakhand), India
     

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The specific conductance, k (mS cm-1) of alkaline earth metal (Mg/Ca/Sr/Ba) laurates in mixed solvent (50% methanol +50% chloroform) has been measured (30-50oC) in order to look into the dissociation / association behaviour of these surfactant systems. The data for critical micelle concentration (c.m.c) help characterising their micellar behaviour. The significant parameters viz. degree of dissociation (α), dissociation constant(KD) and limiting equivalent conductance at infinite dilution (μo) have been deduced for pre-micellar region (dilute range).Thermodynamic parameters viz., enthalpy, free energy and entropy changes for both dissociation and association processes have also been computed.

Keywords

Metal Laurates, Conductance, Dissociation, Association, Critical Micelle Concentration (C.M.C), Thermodynamic Parameters.
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  • Dissociation/Association Behaviour of Alkaline Earth Metal Laurates at Different Temperatures

Abstract Views: 220  |  PDF Views: 1

Authors

Anil Kumar
Department of Chemistry, D.A.V. (P.G.) College, Muzaffarnagar (U.P.), India
Deepti Tyagi
Department of Chemistry, D.A.V. (P.G.) College, Muzaffarnagar (U.P.), India
Simmi Tyagi
Central Building Research Institute, CBRI (A Constitutent Establishment of CSIR), Ministry of Science and Technology (Government of India), Roorkee (Uttarakhand), India
Deepika Shukla
Department of Chemistry, D.A.V. (P.G.) College, Muzaffarnagar (U.P.), India

Abstract


The specific conductance, k (mS cm-1) of alkaline earth metal (Mg/Ca/Sr/Ba) laurates in mixed solvent (50% methanol +50% chloroform) has been measured (30-50oC) in order to look into the dissociation / association behaviour of these surfactant systems. The data for critical micelle concentration (c.m.c) help characterising their micellar behaviour. The significant parameters viz. degree of dissociation (α), dissociation constant(KD) and limiting equivalent conductance at infinite dilution (μo) have been deduced for pre-micellar region (dilute range).Thermodynamic parameters viz., enthalpy, free energy and entropy changes for both dissociation and association processes have also been computed.

Keywords


Metal Laurates, Conductance, Dissociation, Association, Critical Micelle Concentration (C.M.C), Thermodynamic Parameters.