THERMOELECTRIC VAPOR PRESSURE OSMOMETRY

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Abstract:

The thermoelectric vapor pressure osmometer is established as a satisfactory instrument for the determination of the vapor pressure lowering of solutes in solutions. The calibration constant, a sub 1, of the instrument is demonstrated to be independent of the nature of the solute and can be calculated from a knowledge of the system geometry and measurable thermodynamic and transport parameters. Experimental results are evaluated in terms of the change in resistance of the thermistor and the concentration of solution. It is necessary to use a second-degree equation in concentration plot to fit the data. Evaluation of the coefficient of the second-order term requires the incorporation of a heat-of-mixing term in the form of the Van Laar equation. The concentration-independent term beta for the heat of mixing is obtained for fourteen solute-solvent pairs.

Author(s):
Adicoff, Arnold ; Murbach, Warren J.
Author Organization(s):
NAVAL ORDNANCE TEST STATION CHINA LAKE CA
Descriptive Note:
Research rept.
Pagination:
0032

Security Markings

DOCUMENT & CONTEXTUAL SUMMARY

Distribution:
Approved For Public Release
Distribution Statement:
Approved For Public Release; Distribution Is Unlimited.

RECORD

Collection: TR
Identifying Numbers
Report Number(s):
NOTS-TP-4247
Monitor Series:
NAVORD
 Subject Terms
Joint Capability Areas:
JCA_5_Command and Control; JCA_3.2_Engagement; JCA_3_Force Application; JCA_3.2.1_Kinetic Means; JCA_5.5_Direct; JCA_8.2.4_Leverage Capacities and Capabilities of Security Establishments; JCA_8.2_Shape; JCA_8_Building Partnerships; JCA_4.1_Deployment and Distribution; JCA_5.5.1_Communicate Intent and Guidance; JCA_1_Force Support; JCA_1.3_Human Capital Management; JCA_1.2_Force Preparation; JCA_1.3.2_Personnel Management; JCA_JCA_4.1.2_Sustain the Force; JCA_6.4.1_Secure Information Exchange; JCA_6_Net Centric; JCA_1.2.3_Educating; JCA_4.5.4_Requirements Definition; JCA_4.5_Operational Contract Support; JCA_5.3_Planning
Communities of Interest:
Advanced Electronics
Descriptor(s):
*POLYMERS, *MOLECULAR WEIGHT, MEASUREMENT, TRANSPORT PROPERTIES, INSTRUMENTATION, OSMOTIC PRESSURE, CONCENTRATION(CHEMISTRY), CARBAMIC ACID, THERMOELECTRICITY, VAPOR PRESSURE, CALIBRATION, THERMISTORS, SOLUTIONS(MIXTURES), THERMODYNAMICS
Field(s)/Group(s):
Test Facilities, Equipment and Methods, Atomic and Molecular Physics and Spectroscopy
Keyword(s):
OSMOMETRY
Report Date:
1967 Mar 01