Title

Thermodynamics of Protonation of Aqueous Triethylenediamine

Abstract

Calorimetric determinations of heats of solution of solid triethylenediamine in water and in aqueous acid at 25°C. lead to the following: NR3NH+(aq) = H+(aq) + NR3N(aq) ΔH° = 7.21 kcal. per mole and +HNR3NH+(aq) = 2H+(aq) + NRN(aq) ΔH° = 10.18 kcal. per mole. Combination of these ΔH° values with ΔG° values from ionization constants leads to ΔS° = -15.2 and ΔS° = -18.8 cal. deg. -1 mole-1 for the two ionization reactions indicated above.

Department(s)

Chemistry

Document Type

Article - Journal

Document Version

Citation

File Type

text

Language(s)

English

Rights

© 1966 American Chemical Society (ACS), All rights reserved.


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