Lithium nitride (Li/sub 3/N): standard enthalpy of formation by solution calorimetry

Journal Article · Wed Jan 01 00:00:00 EST 1975 · J. Chem. Thermodyn.; (United States)

DOI:https://doi.org/10.1016/0021-9614(75)90075-0· OSTI ID:7364431

O'Hare, P A.G.; Johnson, G K

The enthalpies of reaction of a carefully prepared and characterized specimen of lithium nitride, Li/sub 3/N, with H/sub 2/O and with HCl(aq) were found to be -(581.62 +- 1.42) kJ mol/sup -1/ (-(139.01 +- 0.34) kcal/sub th/ mol/sup -1/) and -(803.50 +- 1.26) kJ mol/sup -1/ +-(192.04 +- 0.30) kcal/sub th/ mol/sup -1/), respectively. Enthalpies of solution of LiCl and NH/sub 4/Cl were also measured. Combination of the measured results with auxiliary thermochemical data from the literature yielded values of -(165.14 +- 1.55) kJ mol/sup -1/ (-(39.47 +- 0.37) kcal/sub th/ mol/sup -1/) and -(164.77 +- 1.51) kJ mol/sup -1/ (-(39.38 +- 0.36) kcal/sub th/ mol/sup -1/), respectively, for the standard enthalpy of formation, ..delta..H/sup 0//sub f/(Li/sub 3/N, c, 298.15/sup 0/K). A weighted mean value, -(164.93 +- 1.09) kJ mol/sup -1/ (-(39.42 +- 0.26) kcal/sub th/ mol/sup -1/), is recommended for ..delta..H/sup 0//sub f/(Li/sub 3/N, c, 298.15/sup 0/K). This result differs by about 8 kcal/sub th/ mol/sup -1/ from previous determinations. (auth)

• Research Organization: Argonne National Lab., IL
• OSTI ID: 7364431
• Journal Information: J. Chem. Thermodyn.; (United States), Vol. 7
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
LITHIUM NITRIDES
FORMATION HEAT
AMMONIUM CHLORIDES
CALORIMETRY
CHEMICAL REACTIONS
ENTHALPY
HYDROCHLORIC ACID
LITHIUM CHLORIDES
SOLUTION HEAT
WATER
ALKALI METAL COMPOUNDS
AMMONIUM COMPOUNDS
AMMONIUM HALIDES
CHLORIDES
CHLORINE COMPOUNDS
HALIDES
HALOGEN COMPOUNDS
HYDROGEN COMPOUNDS
INORGANIC ACIDS
LITHIUM COMPOUNDS
LITHIUM HALIDES
NITRIDES
NITROGEN COMPOUNDS
OXYGEN COMPOUNDS
PHYSICAL PROPERTIES
PNICTIDES
REACTION HEAT
THERMODYNAMIC PROPERTIES
360603* - Materials- Properties