Thermodynamic Properties of the Aqueous Ba2+ Ion and the Key Compounds of Barium

By Parker, V. B.

Book Id: WPLBN0000660584
Format Type: PDF eBook:
File Size: 1.50 MB
Reproduction Date: 2005

Title:	Thermodynamic Properties of the Aqueous Ba2+ Ion and the Key Compounds of Barium
Author:	Parker, V. B.
Volume:
Language:	English
Subject:	Technology., Reference materials, Technology and literature
Collections:	Techonology eBook Collection
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Citation APA MLA Chicago B. Parke, B. V. (n.d.). Thermodynamic Properties of the Aqueous Ba2+ Ion and the Key Compounds of Barium. Retrieved from http://www.gutenberg.us/

Description
Technical Reference Publication

Excerpt
Introduction: Nucleation is the process by which the first microscopic fragments of a new phase are formed. If the nucleation process involves a pre-existing surface, it is termed heterogeneous nucleation; if not, it is termed homogeneous. Nucleation, either as a heterogeneous or as a homogeneous process, is an important and commonplace phenomenon. It is an integral of phase transitions. The formation of rain and snow, the boiling of liquids, the formation of crystals, and smog formation are but a few examples of commonly occurring phenomena involving nucleation.

Table of Contents
Contents 1. Introduction.. .......................... 1024 1.1. Purpose. ............................. 1024 1.2. Conventions and Auxiliary Data. ......... 1024 1.2.1. Definitions and Symbols. .......... 1024 1.2.2. Reference States. ................. 1024 1.2.3. Molar Masses. ................... 1024 1.2.4. Units, Fundamental Constants, and Therrnochemical Property Values for Auxiliary Data ................... 1024 1.2.5. Description of Bibliographic References. 1024 1.2.6. Uncertainties .................... 1025 1.3. Method of Approach ................... 1025 1.3.1. General. ........................ 1025 1.3.2. The Systematic Analysis ........... 1025 2. The Enthalpy of Formation of BaO(cr) ........ 1025 2.1. From Direct Combustion ................ 1025 2.2. From Measurements of the Enthalpies of Reaction of Ba(cr) and BaO(cr) in Aqueous HCISolutions ......................... 1025 2.3. The Selected AfHO(BaO,cr). ............. 1026 3. The Enthalpy of Formation of BaClz(cr) ....... 1026 3.1. From Measurements of the Enthalpies of Reaction of Ba(cr) and BaC12(cr) in Aqueous Solutions. ............................ 1026 3.2. Fru~nM easurements uf the En(hdpies of Solution of BaClz(cr) and BaO(cr) in Aqueous HCl Solutions. ........................ 1026 3.3. The Relationship Between AP0(BaCl,,cr) and AfHO(Ba&,cr). ........................ 1026 01995 by the U.S. Secretary of Commerce on behalf of the United States. This copyright is assigned to the American Institute of Physics and the American Chemical Society. Reprints available from ACS; see Reprints List at back of issue. 3.4. The Selected AfHO(BaClz,cr.). ........... 1026 4. The Enthalpy of Formation of Ba(NO,)z(cr) .... 1026 5. The Enthalpy of Formation of BaHz(cr) ....... 1027 5.1. From Measurements of the Enthalpies of Reaction of Ba(cr) and BaHz(cr) in Aqueous HC1 ................................. 1027 5.2. From the Direct Enthalpy of Hydrogenation of Ba(cr) ............................... 1027 5.3. The Relationship between AfH0(BaC12,cr) and AfH (BaH2,cr). ........................ 10 27 5.4. The Selected Value for AfH0(BaH2,cr) ..... 1027 6. The Enthalpy of Formation of BaC03(cr) from the Decomposition to BaO(cr) and COz(g) ........ 1027 6.1. From Solution Calorimetry .............. 1027 6.2. From the Vapor Prcssurc Measurements of COz(g) as a Function of T. .............. 1027 7. The Thermodynamic Properties of Ba2'(ao) .... 1028 7.1. The Enthalpy of Formation .............. 1028 7.1.1. The Standard Enthalpy of Solution of BaC12(cr). ....................... 1028 7.1.2. From the Carbonate System ........ 1029 7.1.3. The Standard Enthalpy of Solution of Ba(N03)2(cr).. ................... 1030 7.2. The ~O(~a,ao). ...................... 1031 7.2.1. Frvrr~ UIG Sululiun Properties of BaC12.2H20(cr) .................. 1031 7.2.2. The Solution Properties of BaC03(cr) ... 1032 7.2.3. The Solution Properties of Ba(N03)z(cr). 3037 7.3. Summary of Values Obtained for So( ~ a ~ao), and AfHO@ a2', ao) .................... 1032 8. The Recommended Thermodynamic Property Values for Baz+(ao)a nd the Key Compounds ... 1032 9. Closing Comments ........................ 1034 10. Acknowledgements.. ...................... 1034 11. References.. ............................. 1034