Bulletin of the Korean Chemical Society

Korean Chemical Society (대한화학회)
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Application of a New Method to Reproduce the Enthalpies of Transfer of NaI from Water to Aqueous Methanol, Ethanol and iPrOH Solvent Systems at 298 K

  • Rezaej Behbehani, G. (Department of Chemistry, Imam Khomeini International University)
  • Published : 2005.02.20
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Abstract

The enthalpies of transfer, ${\Delta}H_t{\Theta}$, of NaI from water to aqueous methanol, ethanol and isopropanol, iPrOH, systems are reported. These data have been analysed in terms of the new solvation theory. These data are considered in terms of the new developed solvation theory including variable ($\alpha$n + $\beta$N), the net effect of the solute on the solvent-solvent bonding, is positive if there is a net breaking or weakening of solvent-solvent bonds. The solvation parameters recovered from the analyses indicate that the net affect of NaI on solvent structure is a breaking of solvent-solvent bonds and that NaI is preferentially solvated by water in all aqueous alcohol systems considered. ($\alpha$n + $\beta$N) values increase with increasing in the size of the alcohol alkyl residue from methanol to iPrOH.

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References

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