Standard molar enthalpies of formation of sodium alkoxides
نویسندگان
چکیده
The molar enthalpies of solution of sodium in methanol, ethanol, and n-propanol and of sodium alkoxides in their corresponding alcohols were measured at T = 298.15 K using an isoperibol solution calorimeter. From these results and other auxiliary data, the standard molar enthalpies of formation DfH mðRONa; crÞ of sodium methoxide, sodium ethoxide, and sodium n-propoxide were calculated and found to be {( 366.21 ± 1.38), ( 413.39 ± 1.45), and ( 441.57 ± 1.18)} kJ Æ mol , respectively. A linear correlation has been found between DfH mðRONaÞ and DfH mðROHÞ for R = n-alkyl, enabling the prediction of data for other sodium alkoxides. 2006 Elsevier Ltd. All rights reserved.
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