Thermodynamic Modeling and Experimental Investigation of Phosphoric Acid as a Polyelectrolyte System: Comparative Assessment of Thermodynamic ModelsRaja Belkhair, Lhachmi Khamar, Fatima Ezzahra Baali and M. Saddik KadiriEPJ Web Conf., 371 (2026) 05004DOI: https://doi.org/10.1051/epjconf/202637105004