All Title Author
Keywords Abstract

Publish in OALib Journal
ISSN: 2333-9721
APC: Only $99


Relative Articles


Electrical Conductance of Cu (NO3)2 with Kryptofix - 222 in Mixed ( MeOH – DMF) Solvents at Different Temperatures

DOI: 10.5923/j.ajee.20120202.02

Keywords: Kryptofix- 222 – Cu (NO3)2 – (MeOH - DMF) solvents, molar conductance, limiting molar conductance, molar solvated volume, Van der Waals volume, electrostriction volume, apparent molar volume, free en

Full-Text   Cite this paper   Add to My Lib


On using conductometric technique, the apparent association constant (KA) of Cu (NO3)2 were measured in mixed MeOH-DMF mixed solvents at 0, 20, 40, and 100% MeOH (by volume) and different temperatures (298.15, 303.15, 308.15 and 313.15K) in absence and presence of Kryptofix - 222[ 4, 7, 13, 16, 21, 24 – hexaoxa – 1.10 – diazo – bicycle – (8, 8, 8) Hexa cosane]. From the experimental results, the molar conductivities (∧) were calculated and limiting molar conductivites (∧0) were calculated by using Shedlovsky and Fouss – Kraus extrapolation methods. The molar solvated (∨), Van der Waals (∨w), electrostriction (∨e) and apparent molar () volumes were evaluated. The free energy of association (), free energy necessary for complexation (), enthalpy () and entropy () were determined. New equation for the calculation of association constant were used and all the results were discussed.


comments powered by Disqus

Contact Us


WhatsApp +8615387084133

WeChat 1538708413