Abstract:
Vanadium(IV) forms highly stable complexes with acetohydroxamate. In the determination of thermodynamic parameters such as OG, AH and AS of these Vanadium (IV) complexes, the data was processed and analyzed by computer program BEST for the refinement of the calculated log (3 values. Graphs were plotted with Inp versus 1/T, which gave -AH/R as slope. and AS/R as intercept. Enthalpy change for Vanadium(IV) with this simple hydroxamic acid was found to be -166.0, -83.0 and -86.OkJ/mole for ML,, , ML2 and ML3 respectively. Entropy change was 672.30, 475.38 and 567.12 J/mole for ML,, ML2 and ML3 complexes respectively. While AG values calculated for these species were -372.3, -230.5 and -261.8 kJ/mole. The AS is most positive for a 1:1 complex while AG and AH are more negative for the same.
Page(s):
228-231
DOI:
DOI not available
Published:
Journal: Journal of Chemical Society of Pakistan, Volume: 25, Issue: 3, Year: 2003