Measurements of heats of combustion by flame calorimetry. Part 6.—Formaldehyde glyoxal
- 1 January 1970
- journal article
- research article
- Published by Royal Society of Chemistry (RSC) in Transactions of the Faraday Society
- Vol. 66, 794-799
- https://doi.org/10.1039/tf9706600794
Abstract
The heats of combustion of formaldehyde and glyoxal have been measured in the gaseous state at 25°C and 1 atm pressure using a flame calorimeter: ΔH° c(formaldehyde, g)=–570.77 ± 0.42 kJ mol–1, ΔH°(glyoxal, g)=–860.88 ± 0.75 kJ mol–1. The heats of formation have been related to the dissociation energies of the C—H bond in formaldehyde and the central C—C bond in glyoxal to give 2D(H—CHO)–D(OHC—CHO)= 441.2 ± 1.2 kJ.Keywords
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