By use of a commercial solution calorimeter and pressure gauge the standard enthalpy of hydrolysis at 298.15 K, and vapour pressures over the range 280.6 K to 286.4 K, of ethylchloroformate have been determined. The derived results are ΔHfθ(C3H5O2Cl,1,298.15 K) = (497.3 ± 1.7)kJ mol...
ChemInform Abstract: THE STANDARD ENTHALPY OF FORMATION OF LIQUID AND GASEOUS ETHYL CHLOROFORMATEheat of reactionNo abstract is available for this article.doi:10.1002/chin.198102112DAVIES, R. HFINCH, AGARDNER, P. JWILEY‐VCH Verlag GmbHCheminform...
Re: standard enthalpy of formation for acetone and oxygen « Reply #4 on: March 07, 2008, 05:09:44 PM » I need some serious help with this assignmentA sample of acetone liquid (C3H6O) is burned in an insulated calorimeter to produce carbon dioxide gas and liquid water. Determine ...
the elements in a fluorine-bomb calorimeterThe standard molar enthalpy of formation of liquid hydrogen fluoride ΔfHom (HF, l) = -(303.56 ± 0.27) kJ·mol-1 at T = 298.15 K and po = 101.325 kPa has been measured by direct reaction of gaseous hydrogen and fluorine in a bomb calorimeter...
1.Standard molar enthalpy of formation of Zn(Thr)2+ (aq, ∞) and that of Zn(Thr) Ac2 · 2H2O (s) were calculated to be (955.15K时在纯水中的溶解焓,计算了Zn(Thr)~(2+)(aq,∞)和Zn(Thr)Ac_2·2H_2O(s)的标准摩尔生成焓分别为(955。 2.Finally,standard molar enthalpy of formation...
The results have been used to propose recommended standard thermodynamic functions of formation at 298.15 K and 105 Pa. The Gibbs energy, entropy, and enthalpy of Ag3Sb(cr) are −5934 ± 1277 J/mol, 195.89 ± 2.54 J/(mol K), and 841 ± 1046 J/mol, respectively, and those of Ag6...
For similar reasons, liquid forms of substances tend to have larger values than their solid forms. For example, S°H2O (l) = 70 J/mol·K and S°H2O (g) = 188.8 J/mol·K.Among elements in the same state, the heavier element (larger molar mass) has a higher standard molar entropy ...
Phase Equilibrium System of RbClLaCl3HCl(12.60 Mass %)H2O at 298.15 K and Standard Molar Enthalpy of Formation of RbLaCl4... Solubilities of the quaternary system RbClLaCl3HClH2O were determined at 298.15 K, and the corresponding equilibrium diagram was cons... ZP Qiao,RZ Sun,X Chen,......
ChineseJournalofChemistry,2006,24,l87一l92 Low-temperatureHeatCapacityandStandardMolarEnthalpy ofFormationofPotassiumL-ThreonateHydrateK(C4HTOs)·H20 WEI,Qing。(魏青) CHEN,San-Ping。(陈三平) GAO,Sheng-Li。(高胜利) DI,You-Ying(邸友莹) TAN,Zhi.cheng气谭志诚) SHI,Qi-Zhen。(史启祯) DepartmentofChem...
(g). X-ray diffraction results showed the synthesis of HfN at 1300 and 1400 °C and HfC1-yNy at ≥1400 °C under direct nitridation of examples using a C/HfO2 molar proportion of 2.15. These stage analysis data as well as reduced lattice stress and greater crystallite sizes of HfC1-...