Electromotive forces of cells without liquid-junction Pt, H-2(g, p degrees)HCl(m(E))AgCl-Ag and Pt, H-2(g, p degrees)HCl(m(E)),G(m(N)) AgCl-Ag, have been measured at 10 K intervals from 278.15 to 318.15 K, where G refers to D-glucose, m(E) = 0.005-0.1 mol kg(-1), and m(N) = 0.1-0.3 mol kg(-1). The thermodynamic parameters of interaction, f(EN) (g(EN), h(EN), s(EN) C-p,C-EN), of G with HCl in water have been evaluated. It appears that g(EN) > O, h(EN) 0, Ts-EN > 0, and c(p,EN) < 0 at all five temperatures (except for Ts-EN at 318.15 K), and the values of g(EN) vary slightly with temperature, whereas the values of h(EN) and Ts-EN decrease rapidly from positive to negative with increasing temperature. By use of the values of Delta(t)G degrees(H+) reported by Wells and co-workers, the values of g(H)+(-G) and g(Cl)-(-G) have been obtained at 298.15 K. A comparison of the interaction parameters for the HCl-G pair with those for the MCl (alkali chlorides)-G pair shows that the g(EN), h(EN), and s(EN) for the HCl-G pair are obviously higher than those for the MCl-G pair. These were interpreted in terms of the suggestion "H+-induced structural changes". Furthermore, it has been shown that the group additivity parameters obtained from the HCl-alcohol-water systems is not applicable to the HCl-G-water system.