Enthalpy of formation of the yttrium ion in aqueous solution at infinite dilution

✍ Scribed by A.S. Monayenkova; ; S.A. Lezhava; ; A.A. Popova; ; L.A. Tiphlova

• Publisher: Elsevier Science
• Year: 2001
• Tongue: English
• Weight: 75 KB
• Volume: 33
• Category: Article
• ISSN: 0021-9614
• DOI: 10.1006/jcht.2001.0887

✦ Synopsis

The standard molar enthalpy of formation of the yttrium ion in aqueous solution at infinite dilution at T = 298.15 K was determined by two independent ways by solution calorimetry and was found to be -(733.51 ± 2.07) kJ • mol -1 . During the experiment, the molar enthalpies of reaction of metallic yttrium with 1.07 mol • dm -3 HCl and 0.88 mol • dm -3 HClO 4 as well as the molar enthalpies of dissolution of YCl 3 in 1.05 mol • dm -3 HCl and in water were measured in a sealed swinging calorimeter equipped with an isothermal jacket. This result is discussed and compared with previous experimental values.