Étude thermochimique des alliages de gallium et de sodium

Enthalpies of mixing of liquid alloys of gallium and sodium and enthalpies of formation ΔH_f of the two compounds NaGa₄ and Na₅Ga₈ of this binary system were determined calorimetrically at 723 K. Referred to the simple constituants in the liquid state, the following values were found:

By means of quantitative thermal differential analysis, the value for the melting enthalpy of Na₅Ga₈ was found to be (13.5±0.5) kJ mol^?1.