Apparent molar volumes and apparent molar heat capacities of aqueous silver nitrate at molalities from to , at temperatures from 278.15K to 393.15K, and at the pressure 0.35MPa
التفاصيل البيبلوغرافية
العنوان:
Apparent molar volumes and apparent molar heat capacities of aqueous silver nitrate at molalities from to , at temperatures from 278.15K to 393.15K, and at the pressure 0.35MPa
Densities of aqueous silver nitrate solutions were determined at molalities m from 0.015 mol · kg −1 to 0.5 mol · kg −1 , at temperatures T from 278.15 K to 368.15 K, and at the pressure 0.35 MPa, using a vibrating tube densimeter (DMA 512P, Anton Paar, Austria). A fixed cell, power-compensation, differential-output, temperature-scanning calorimeter (NanoDSC 6100, Calorimetry Sciences Corporation, American Fork, UT, USA) was used to measure the heat capacities of the same solutions at the same pressure and at 278.15⩽ T /K⩽393.15. Apparent molar heat capacities C p , φ and apparent molar volumes V φ were calculated for these solutions and fitted by regression to empirical equations describing the surfaces ( C p , φ , T , m ) and ( V φ , T , m ).