Heat of formation of decaborane
- 1 November 1960
- journal article
- Published by National Institute of Standards and Technology (NIST) in Journal of Research of the National Bureau of Standards Section A: Physics and Chemistry
- Vol. 64A (6) , 521-525
- https://doi.org/10.6028/jres.064a.052
Abstract
The heat of formation of crystalline decaborane has been determined by calorimetric measurement of the heat of decomposition: B 10 H 14 ( c ) → 10 B ( am ) + 7 H 2 ( g ) , Δ H ( 25 ° C ) = 82.8 ± 5.9 kj / mole , ( 19.8 ± 1.4 kcal / mole ) . With the heat of transition of crystalline to amorphous boron taken as 0.40 kcal/mole, we obtain for the heat of formation of decaborane: Δ Hf 298.15 ° = - 66.1 kj / mole , ( - 15.8 kcal / mole ) . .Keywords
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