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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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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

M. Berthelot gives the heat of formation of nitro-starch as 812 cals. for 1 grm., and the heat of total combustion as equal to 706.5 cals. for 207 grms., or for 1 grm.

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

Unfortunately there is still some doubt about the heat of formation of calcium carbide, De Forcrand returning it as -0.65 calorie, and Gin as +3.9 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

The heat of formation of nitro-glycerine, as deduced from the heat of combustion by M. Longuinine, is 432 calories for 1 grm.; and the heat of combustion equals 1,576 cals. for 1 grm.

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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