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heat of formation

British  

noun

  1. chem the heat evolved or absorbed when one mole of a compound is formed from its constituent atoms

"Collins English Dictionary — Complete & Unabridged" 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

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According to Berthelot, its heat of formation from its elements equals 49.1 calories, and its heat of total combustion by free oxygen is equal to +618.4 cals.

From Nitro-Explosives: A Practical Treatise by P. Gerald (Percy Gerald) Sanford

The marked activity of chloramine as a chlorinating agent could be predicated from its heat of formation, which is 8,230 calories.

From Chlorination of Water by Joseph Race

By causing compressed acetylene to dissociate under the influence of an electric spark, Mixter measured its heat of formation as -53.3 calories.

From Acetylene, the Principles of Its Generation and Use A Practical Handbook on the Production, Purification, and Subsequent Treatment of Acetylene for the Development of Light, Heat, and Power by F. H. (Frank Henley) Leeds

Its heat of formation from its elements is +156.1 calories.

From Nitro-Explosives: A Practical Treatise by P. Gerald (Percy Gerald) Sanford

The other possible chloramines should be even more active as the heat of formation of these compounds are: Dichloramine NHCl2 — 36,780 calories.

From Chlorination of Water by Joseph Race

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