|
Twitter
|
Facebook
|
Google+
|
VKontakte
|
LinkedIn
|
 
 
International Journal of Innovation and Scientific Research
ISSN: 2351-8014
 
 
Monday 21 May 2018

About IJISR

News

Submission

Downloads

Archives

Custom Search

Contact

Connect with IJISR

  Call for Papers (May 2018)  
 
 
 

Electrochemical Studies on Ion Pairs Formation of Sodium Diethyldithiocarbamate in Water


Volume 29, Issue 2, March 2017, Pages 184–192

 Electrochemical Studies on Ion Pairs Formation of Sodium Diethyldithiocarbamate in Water

Nasr Hussein El-Hammamy and Haitham Ahmed El-Araby

Original language: English

Received 22 October 2016

Copyright © 2017 ISSR Journals. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

Abstract


The conductance data of sodium diethyldithiocarbamate (NaDDC) in water solutions at various temperatures (25, 30, 35 and 40°C) are presented. The results were construed by applying the Fuoss-Onsager equation to obtain the parameters: equivalent conductance at infinite dilution (Λo), the distance of closest approach (å) and association constant (KA). In the light of the solvent separated-ion pair model, the KA trend is discussed. A comparison was done between the value of å and the sum of calculated electrostatic Stokes' radii R+ and R-. Both of thermodynamic functions (ΔHo, ΔGo, ΔSo) and the activation energy (ΔEs) were determined; the Λo values were noticed to increase gradually with the dramatic increase in temperature referring to less solvation or higher ions mobility. Negative values of Gibbs free energy change ΔGo for (NaDDC) indicate that the association process is preferable than the dissociation process. The positive value of (ΔHo) points to that the association process is endothermic. Entropy change (ΔSo) values were positive which means that the solvation of ion-pair decreases emulated to that of the free ion.

Author Keywords: Sodium diethyldithiocarbamate, limiting equivalent conductance (Λo), ion association, activation energy and thermodynamic functions.


How to Cite this Article


Nasr Hussein El-Hammamy and Haitham Ahmed El-Araby, “Electrochemical Studies on Ion Pairs Formation of Sodium Diethyldithiocarbamate in Water,” International Journal of Innovation and Scientific Research, vol. 29, no. 2, pp. 184–192, March 2017.