Thermodynamic Properties of Gases in Propellants and Oxidizers. I. Solubilities of He, N₂, O₂, Ar, and N₂O₃ in Liquid N₂O₄

Thermodynamic properties of gases in propellants. Solubilities of gaseous ammonia, carbon monoxide, carbon dioxide, and sulfur hexafluoride

“…The solubilities of C02 and SF6 in N204 are summarized in Table IV and represented in Figure 3. The corresponding equations for AG°are as follows: AG°(C02 in N204) = -2,828 + 17.33 T AGa(SFe in N204) = -1,748 + 15.44 T The values of AH0 are strongly negative in both systems because C02 and SF6 do not break up the N02-N02 bond in N204 as He, Ar, N2, and 02 in N204 (1). The solubility of C02 in N204 is close to the ideal solubility at 1 atm computed from X(C02) = l//°, where/0 is the fugacity of pure liquid C02 at the temperature of interest, and X is the mole fraction.…”