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This paper reports that 1-dodecylamine hydrobromide (1-C 12 H 25 NH 3 ·Br)(s) has been synthesized using the liquid phase reaction method.The lattice potential energy of the compound 1-C 12 H 25 NH 3 ·Br and the ionic volume and radius of the 1-C 12 H 25 NH + 3 cation are obtained from the crystallographic data and other auxiliary thermodynamic data.The constant-volume energy of combustion of 1-C 12 H 25 NH 3 ·Br(s) is measured to be c U o m (1-C 12 H 25 NH 3 ·Br,s) =-(7369.03±3.28) kJ·mol 1 by means of an RBC-II precision rotating-bomb combustion calorimeter at T =(298.15±0.001) K.The standard molar enthalpy of combustion of the compound is derived to be c H o m (1-C 12 H 25 NH 3 ·Br,s)=-(7384.52±3.28) kJ·mol 1 from the constant-volume energy of combustion.The standard molar enthalpy of formation of the compound is calculated to be f H o m (1-C 12 H 25 NH 3 ·Br,s)=-(1317.86±3.67) kJ·mol 1 from the standard molar enthalpy of combustion of the title compound and other auxiliary thermodynamic quantities through a thermochemical cycle.
This paper reports that 1-dodecylamine hydrobromide (1-C 12 H 25 NH 3. Br) (s) has been synthesized using the liquid phase reaction method. The lattice potential energy of the compound 1-C 12 H 25 NH 3. Br and the ionic volume and radius of the 1-C 12 H 25 NH + 3 cation are obtained from the crystallographic data and other auxiliary thermodynamic data. constant-volume energy of combustion of 1-C 12 H 25 NH 3. Br (s ) is measured to be c om (1-C 12 H 25 NH 3. Br, s) = - (7369.03 ± 3.28) kJ · mol 1 by means of an RBC-II precision rotating-bomb combustion calorimeter at T = ( 298.15 ± 0.001) K. The standard molar enthalpy of combustion of the compound is derived to be c H om (1-C 12 H 25 NH 3. Br, s) = - (7384.52 ± 3.28) kJ · mol 1 from the constant -volume energy of combustion. The standard molar enthalpy of formation of the compound is calculated as bef H om (1-C 12 H 25 NH 3 · Br, s) = - (1317.86 ± 3.67) kJ · mol 1 from the standard molar enthalpy of combustion of the title compound and other auxil iary thermodynamic quantities through a thermochemical cycle.