HEATS OF FORMATION OF COMPOUNDS CONTAINING B, BE, AL AND LI. I. HEATS OF FORMATION OF ALPHA'-BERYLLIUM CHLORIDE AND ALPHA- AND BETA-BERYLLIUM NITRIDE,
Abstract
The heats of the following reactions were determined calorimetrically at one atmosphere pressure and 25C. Be(c) + Cl2(g) to alpha'-BeCl2(c): -117.1 plus or minus 0.4 Kcal/mole. Alpha-Be3N2(c) + 3Cl2(g) to 3alpha' -BeCl2(c) + N2(g): -210.3 plus or minus 1.1 Kcal/mole. Beta-Be3N2(c) + 3Cl2(g) to 3alpha'-BeCl2(c) + N2(g): -214.6 plus or minus 0.8 Kcal/mole. 3Be(c) + 2NH3(g) to alpha-Be3N2(c) + 3H2(g): -118.4 plus or minus 0.3 Kcal/mole. These data and the value for the heat of formation of ammonia (-11.04 Kcal/mole) enable the following standard heats of formation to be derived. Alpha'-BeCl2: -117.1 plus or minus 0.4 Kcal/mole. Alpha-Be3N2: -141.0 plus or minus 1.6 Kcal/mole, or -140.5 plus or minus 0.3 Kcal/mole. Beta-Be3N2: -136.7 plus or minus 1.5 Kcal/mole. (Author)
Document Details
- Document Type
- Technical Report
- Publication Date
- Sep 01, 1964
- Accession Number
- AD0630633
Entities
People
- C. Hayman
- J. T. Bingham
- P. D. Greene
- P. Gross