Open AccessHeats of hydrolysis and formation of dimethoxychloroborane
Author(s) -
Marthada V. Kilday,
Walter H. Johnson,
E.J. Prosen
Publication year - 1961
Publication title -
journal of research of the national bureau of standards. section a. physics and chemistry
Language(s) - English
Resource type - Journals
eISSN - 2376-5704
pISSN - 0022-4332
DOI - 10.6028/jres.065a.045
Subject(s) - mole , hydrolysis , chemistry , mole fraction , organic chemistry
The heat of hydrolysis of dimethoxychloroborane has been measured; for the reaction,(CH 3 O ) 2 BCl ( liq ) + 3 H 2 O ( liq ) = H 3 BO 3 ( c ) + 2 CH 3 OH ( liq ) + HCl ( g )Δ H ( 25 ° C ) = - 26.6 ± 0.8 kj / mole= - 6.4 ± 0.2 kcal / mole .From this, we have calculated the heat of formation of dimethoxychloroborane: for the liquid, Δ Hf ° (25 °C) = -782.1 ± 1.8 kj/mole (-186.9±0.4 kcal/mole), and for the gas, Δ Hf ° (25 °C) = -747.9 ±2.2 kj/mole (-178.8±0.5 kcal/mole).