Study of dimerization in acetonitrile vapor by measurement of thermal conductivity. [338-387/sup 0/K, 100-1050 torr]

Journal Article · Thu May 05 04:00:00 EDT 1977 · J. Phys. Chem.; (United States)

DOI:https://doi.org/10.1021/j100524a012· OSTI ID:7305464

Renner, T A; Blander, M

The thermal conductivity of acetonitrile vapor was measured in a modified thick hot-wire cell between 338 and 387 K at pressures ranging from approximately 100 to 1050 Torr (13.3 to 140 kPa). Analysis of the experimental data indicates that a dimeric species is the main source of the observed enhancement of the thermal conductivity of the vapor due to association reactions. Equilibrium constants for the reaction 2CH/sub 3/CN reversible (CH/sub 3/CN)/sub 2/ were determined from the thermal conductivity data. The enthalpy of formation of the acetonitrile dimer is -5002 cal/mole (-20.93 kJ/mole) and the entropy of formation is -21.15 cal/mole K (-88.49 J/mole K).

• Research Organization: Argonne National Lab., IL
• OSTI ID: 7305464
• Journal Information: J. Phys. Chem.; (United States), Journal Name: J. Phys. Chem.; (United States) Vol. 81:9; ISSN JPCHA
• Country of Publication: United States
• Language: English

Related Subjects

37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY
400301* -- Organic Chemistry-- Chemical & Physicochemical Properties-- (-1987)
CHEMICAL REACTIONS
DIMERIZATION
ENTHALPY
ENTROPY
FORMATION HEAT
LOW PRESSURE
MEDIUM PRESSURE
MEDIUM TEMPERATURE
NITRILES
ORGANIC COMPOUNDS
ORGANIC NITROGEN COMPOUNDS
PHYSICAL PROPERTIES
POLYMERIZATION
PRESSURE DEPENDENCE
REACTION HEAT
TEMPERATURE DEPENDENCE
THERMAL CONDUCTIVITY
THERMODYNAMIC PROPERTIES