Standard Gibbs energies of transfer,△Gθt,of Tl(Ⅰ)from water to aqueous sucrose and aqueous glucose solutions(mass fractions of sucrose and glucose W=0,010,020,030,040 and 050)were determined by po...Standard Gibbs energies of transfer,△Gθt,of Tl(Ⅰ)from water to aqueous sucrose and aqueous glucose solutions(mass fractions of sucrose and glucose W=0,010,020,030,040 and 050)were determined by polarography at 298±1K.In aqueous sucrose and glucose solutions containing 50×10-2mol·L-1LiClO4,the reversible halfwave potential and the diffusion coefficients for Tl(Ⅰ)were determined,respectively.Values of △Gθt,obtained from the reversible halfwave potentials vs.the ferrocene electrode scale,are negative and these decrease with increasing concentration of sucrose and glucose,indicating increasing stability of Tl(Ⅰ)in sucrosewater and glucosewater solutions.The △Gθt values were split into electrostatic and chemical contributions.The decreased chemical contribution shows that the mixtures are more basic than pure water.The experimental results were discussed in terms of solutesolvent and solutesolute interactions in the ternary systems.展开更多
The standard transfer Gibbs energies (Δ trG° )of KBPh4 from reference solvent of water to water/ethanol, water/propanol, water/2- propanol,water/ethylene glycol, water/glycerol mixtures in different proportional...The standard transfer Gibbs energies (Δ trG° )of KBPh4 from reference solvent of water to water/ethanol, water/propanol, water/2- propanol,water/ethylene glycol, water/glycerol mixtures in different proportional ratio have been studied. The interactions of KBPh4 with the above mixed solvents were analyzed. The standard transfer Gibbs energy of cavity(Δ trG° cav) and the standard transfer Gibbs energy of interaction(Δ trG° int) from water to water/2- propanol mixtures at 298.15 K were calculated by the Scaled Particle Theory (SPT).展开更多
文摘Standard Gibbs energies of transfer,△Gθt,of Tl(Ⅰ)from water to aqueous sucrose and aqueous glucose solutions(mass fractions of sucrose and glucose W=0,010,020,030,040 and 050)were determined by polarography at 298±1K.In aqueous sucrose and glucose solutions containing 50×10-2mol·L-1LiClO4,the reversible halfwave potential and the diffusion coefficients for Tl(Ⅰ)were determined,respectively.Values of △Gθt,obtained from the reversible halfwave potentials vs.the ferrocene electrode scale,are negative and these decrease with increasing concentration of sucrose and glucose,indicating increasing stability of Tl(Ⅰ)in sucrosewater and glucosewater solutions.The △Gθt values were split into electrostatic and chemical contributions.The decreased chemical contribution shows that the mixtures are more basic than pure water.The experimental results were discussed in terms of solutesolvent and solutesolute interactions in the ternary systems.
文摘The standard transfer Gibbs energies (Δ trG° )of KBPh4 from reference solvent of water to water/ethanol, water/propanol, water/2- propanol,water/ethylene glycol, water/glycerol mixtures in different proportional ratio have been studied. The interactions of KBPh4 with the above mixed solvents were analyzed. The standard transfer Gibbs energy of cavity(Δ trG° cav) and the standard transfer Gibbs energy of interaction(Δ trG° int) from water to water/2- propanol mixtures at 298.15 K were calculated by the Scaled Particle Theory (SPT).
