Bond energies for different bonds, single bond, double bond, triple bond, etc., and bonds in compounds. [5] |
“In Helmholtz’ point of view, a chemical reaction is considered to have a latent heat just as does any change in the state of aggregation; consequently, in my view the two parts into which total energy can be divided are not spoken of as free energy and bound energy but as ‘reaction energy’ and ‘latent energy’.”— Fritz Haber (1905), Thermodynamics of Technical Gas Reactions (pg. ix)
“These cases are generally explained by assuming the breaking of weak, but ‘real’, bonds between the phosphorus tricholoride and chlorine, the hydrochloric acid and the ammonia, and between he carbamic acid and the ammonia. When such an assumption does not agree with the current conception of valence, as in the case of acetic acid, which, like nitric oxide, shows a marked tendency to polymerize just above the boiling point, ‘molecular compounds’ are assume.”— Fritz Haber (1905), Thermodynamics of Technical Gas Reaction (pg. 154)