Thermodynamic properties of organic compounds

Abstract

Calorimetric and cryometric methods were employed to measure the enthalpy and entropy of fusion of caprylamide and stearamide.

Apparent molar volumes and apparent molar heat capacities of aqueous magnesium nitrate, strontium nitrate, and manganese nitrate at temperatures from 278.15K to 393.15K and at the pressure 0.35MPa

“…For Sr(NO 3 ) 2 (aq) our regression surface was higher by 10. 6 J AE K À1 AE mol À1 from the single value reported by Berchiesi et al [7].…”

“…In equation (3), A V is the Debye-Hü ckel coefficient for volumes taken from Sorenson et al [2]; the coefficient w 3/2 is used as described by Pitzer [3] and values are given in table 4 [4,5,7,8]; and for Mn(NO 3 ) 2 (aq), average D V = 1. 4 cm 3 AE mol À1 , maximum D V = 1.…”

The covolumes of the fused aliphatic acids from C9 to C18 and of C2, from viscosity measurements

“…These are listed in Tables 2 and 3. As previously described [1 ], for the even series the covolumes of these acids can be calculated on the basis of the model reported in Fig. 4 of the preceding note [1 ].…”

“…They are discussed in connection with the equations of Arrhenius and Batchinski.Results concerning viscosity measurements on the linear aliphatic acids C9, Ca0, Clz, C1~, Ca6 and C_as were discussed in a previous paper [1 ]. The present one deals with the covolumes (obtained from viscosity measurements by the Batchinski formula) of all the acids, odd and even, from C9 to Cls, and of C~.…”

“…As previously described [1 ], for the even series the covolumes of these acids can be calculated on the basis of the model reported in Fig. 4 of the preceding note [1 ]. Further, for the acids Cll, C1~, C15 and C17 , the covolume bv closely corresponds to the value that can be calculated from the model under the hypothesis that the dimer rotates around the a axis, describing a cylinder; that is by = 1/2(12/2+rc)21lN.…”