In the paper entitled “Communication: A Simpler and More Applicable 2nd Law of Thermodynamics”, the author cited some well-known physical and chemical phenomena as well as speculations to elucidate that the Atomistic 2nd Law of Thermodynamics is simpler and more applicable. In the current communication, in addition to focusing on the experiments that could verify these speculations, some phenomena reported in literature are explained via the Atomistic 2nd Law of Thermodynamics and its related concepts. The reported subjects are: extra pressure ΔP inside a liquid drop, saturated vapor pressure and liquid curvature, surface energy of a liquid drop, molar chemical potential of a condensed phase, formula for the molar chemical potential of a gas, spontaneous merging between small and large liquid drops. Among these, the “surface energy of a liquid drop” is found to be (ΔP·R)/3 in which R is the radius of the liquid drop. Since this result and the related knowledge are different from current perception, a vigorous verification is required. In “molar chemical potential of a condensed phase”, the categories of inter-molecular bonding are only briefly mentioned, and an in-depth study is needed. The discussed topics are: solubility of materials, solubility product of a compound, molar chemical potential and surface energy of a solid, constraints that should be fulfilled.
References
[1]
Liu, K. (2025) Communication: A Simpler and More Applicable 2nd Law of Thermodynamics. Advances in Materials Physics and Chemistry, 15, 39-59. https://doi.org/10.4236/ampc.2025.153003 https://www.scirp.org/journal/paperinformation?paperid=143054
[2]
Butt, H.-J., Graf, K. and Kappl, M. (2003) Physics and Chemistry of Interfaces. Wiley-VCH GmbH & Co. KGaA. https://addyrachmat.wordpress.com/wp-content/uploads/2019/03/physics-textbook-hans-jucc88rgen-butt_-kh-graf_-michael-kappl-physics-and-chemistry-of-interfaces-2003-wiley-vch-.pdf
[3]
Landau, L.D., Akhiezer, A.I. and Lifshitz, E.M. (1967) Surface Phenomena. In: Landau, L.D., Akhiezer, A.I. and Lifshitz, E.M., Eds., General Physics, Elsevier, 276-293. https://www.sciencedirect.com/topics/computer-science/saturated-vapor-pressure https://doi.org/10.1016/b978-0-08-009106-8.50015-7
Barsotti, E., Tan, S.P., Piri, M. and Chen, J. (2020) Capillary-Condensation Hysteresis in Naturally-Occurring Nanoporous Media. Fuel, 263, Article 116441. https://doi.org/10.1016/j.fuel.2019.116441 https://www.sciencedirect.com/science/article/abs/pii/S0016236119317958?dgcid=raven_sd_recommender_email
[6]
Bui, B.T. and Katsuki, D. (2021) The Effect of Capillary Condensation on the Geomechanical and Acoustic Properties of Tight Formations: An Experimental Study. Abu Dhabi International Petroleum Exhibition & Conference. https://www.researchgate.net/publication/356957934_The_Effect_of_Capillary_Condensation_on_the_Geomechanical_and_Acoustic_Properties_of_Tight_Formations_An_Experimental_Study
[7]
Neimark, A.V. and Ravikovitch, P.I. (2001) Capillary Condensation in MMS and Pore Structure Characterization. Microporous and Mesoporous Materials, 44, 697-707. https://doi.org/10.1016/s1387-1811(01)00251-7 https://www.sciencedirect.com/science/article/abs/pii/S1387181101002517?via%3Dihub
[8]
Cook, G. and Dickerson, R.H. (1995) Understanding the Chemical Potential. American Journal of Physics, 63, 737-742. https://www.physics.rutgers.edu/grad/601/CM2019/EXTRA/understanding_chem_potential.pdf
[9]
Baierlein, R. (2001) The Elusive Chemical Potential. American Journal of Physics, 69, 423-434. https://doi.org/10.1119/1.1336839 https://www.physics.rutgers.edu/grad/601/CM2019/EXTRA/chemical_potential_meaning.pdf
[10]
Job, G. and Herrmann, F. (2006) Chemical Potential—A Quantity in Search of Recognition. European Journal of Physics, 27, 353-371. https://doi.org/10.1088/0143-0807/27/2/018 https://web.phys.ntnu.no/~stovneng/TFY4165_2013/oving10/ov9/chemical_potential.pdf
[11]
Wikipedia (2025) Intermolecular Force. https://en.wikipedia.org/wiki/Intermolecular_force
[12]
Bashyal, J. (2023) Physical Chemistry: Free Energy and Equilibrium Constant. https://scienceinfo.com/free-energy-and-equilibrium-constant/
[13]
LibreTexts Chemistry. 8.3: Gas Solubility. https://chem.libretexts.org/Courses/South_Puget_Sound_Community_College/Chem_121%3A_Introduction_to_Chemistry/08%3A_Chapter_7_-_Solutions/8.03%3A_Gas_Solubility
Straumal, B., Baretzky, B., Mazilkin, A., Protasova, S., Myatiev, A. and Straumal, P. (2009) Increase of Mn Solubility with Decreasing Grain Size in ZnO. Journal of the European Ceramic Society, 29, 1963-1970. https://doi.org/10.1016/j.jeurceramsoc.2009.01.005 https://www.sciencedirect.com/science/article/abs/pii/S0955221909000077
[17]
Csicsák, D., Szolláth, R., Kádár, S., Ambrus, R., Bartos, C., Balogh, E., et al. (2023) The Effect of the Particle Size Reduction on the Biorelevant Solubility and Dissolution of Poorly Soluble Drugs with Different Acid-Base Character. Pharmaceutics, 15, Article 278. https://doi.org/10.3390/pharmaceutics15010278 https://www.researchgate.net/publication/367172441_The_Effect_of_the_Particle_Size_Reduction_on_the_Biorelevant_Solubility_and_Dissolution_of_Poorly_Soluble_Drugs_with_Different_Acid-Base_Character
[18]
Chemguide. Solubility Product and the Common Ion Effect. https://www.chemguide.co.uk/physical/ksp/commonion.html
[19]
Wikipedia (2025) Surface Energy. https://en.wikipedia.org/wiki/Surface_energy
[20]
Behrens, M.A., Franzén, A., Carlert, S., Skantze, U., Lindfors, L. and Olsson, U. (2025) On the Ostwald Ripening of Crystalline and Amorphous Nanoparticles. Soft Matter, 21, 2349-2354. https://doi.org/10.1039/d4sm01544d https://pubs.rsc.org/en/content/articlepdf/2025/sm/d4sm01544d
[21]
Reyes, Y., Hamzehlou, S. and Leiza, J.R. (2021) Ostwald Ripening in Nano/Miniemulsions in the Presence of Two Costabilizers as Revealed by Molecular Dynamics Simulations. Journal of Molecular Liquids, 335, Article 116152. https://doi.org/10.1016/j.molliq.2021.116152 https://www.sciencedirect.com/science/article/abs/pii/S0167732221008795?via%3Dihub
[22]
Wikipedia (2025) Ostwald Ripening. https://en.wikipedia.org/wiki/Ostwald_ripening
