الفهرس 
AcknowledgementOnly 14 pages are availabe for public view
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Abstract
The present study dealt with the different physical parameters for some electrolytes and their complexes in different solutions like association constant, formation constants, solubilites and thermodynamic parameters. The obtained results can be summarized as follow : It was found that the Gibbs free energies of solvation of nano NiO samples prepared by different methods followed the order in DMSO: NU˂ NDMG ˂ NPPT ˂ NSG Zeta potential gave small values in case of nano NiO which proves little solubility of nano NiO in DMF. The temperature effect on solubility of nano NiO samples is very small. TEM study showed the particle size of N-NiSO4 is in the range of (9.9-28.69)nm and the particle size of N-NiAc is in the range of (3.55-7.58)nm. Complex formation parameters for B-NiSO4 in presence of ligand are greater than N-NiSO4 in all media. The complex formation parameters for B-NiAc are greater than N-NiAc. The complex formation parameters for bulk and nano nickel sulfate in presence of ligand show that the parameters are greater for 1:1 (M/L) than that of 1:2 (M/L) for bulk but for nano 1:2 (M/L) are greater than that of 1:1 (M/L). The thermodynamic complex formation parameters for solvation of (N-NiSO4) with ligand H2L forming 1:1 complexes gave results decrease with rise of temperature due to the migration of ions away from the ionic atmosphere of aggregation by increase of temperature. The complex formation parameters are higher in case of B-NiAc than in N-NiAc at all the used temperatures. Biological study is carried on two types of bacteria Gram-positive (S. aureus) and Gram-negative bacteria (E.Coli) and also biological activity(antimicrobial, antioxidant and antitumor), N-NiSO4 has the most biological activity amongst the other metal complexes.