Comment on “Experimental evidence for excess entropy discontinuities in glass-forming solutions” [J. Chem. Phys. 136, 074515 (2012)] | Zendy

Anatoli Bogdan | Zendy; Thomas Loerting | Zendy

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Comment on “Experimental evidence for excess entropy discontinuities in glass-forming solutions” [J. Chem. Phys. 136, 074515 (2012)]

Author(s) -

Anatoli Bogdan,

Thomas Loerting

Publication year - 2013

Publication title -

the journal of chemical physics

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 1.071

H-Index - 357

eISSN - 1089-7690

pISSN - 0021-9606

DOI - 10.1063/1.4812929

Subject(s) - classification of discontinuities , thermodynamics , entropy (arrow of time) , heat capacity , invariant (physics) , mixing (physics) , statistical physics , chemistry , materials science , physics , mathematics , mathematical physics , mathematical analysis , quantum mechanics

This Comment presents thermograms which demonstrate that glass transition temperatures, Tgs, the change in heat capacity, ΔCp, and the quasi-invariant point, (C'g,T'g), of citric-acid/H2O are not consistent with those reported by Lienhard et al. This raises doubts about validity of their estimation of the excess mixing entropy difference, ΔS(l)mix-ΔS(g)mix, at the Tg.

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