Thermodynamics of the association reactions OH sup minus + H sub 2 O = HOHOH sup minus and CH sub 3 O sup minus + CH sub 3 OH = CH sub 3 OHOCH sub 3 sup minus in the gas phase

Journal Article · Thu Jun 14 04:00:00 EDT 1990 · Journal of Physical Chemistry; (USA)

DOI:https://doi.org/10.1021/j100375a076· OSTI ID:6438823

Paul, G J.C.; Kebarle, P ^[1]

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1. Univ. of Alberta, Edmonton (Canada)

The temperature dependence of the equilibrium constants for the gas-phase reactions HO{sup {minus}} + HOH = HOHOH{sup {minus}} (1) and CH{sub 3}O{sup {minus}} + HOCH{sub 3} = CH{sub 3}OHOCH{sub 3}{sup {minus}} (2) was measured with a pulsed electron high-pressure mass spectrometer. The enthalpy {Delta}H{degree} and entropy {Delta}S{degree} changes were obtained from van't Hoff plots of the equilibrium constants. The enthalpy changes were found in good agreement with values reported by Moet-Ner and Sieck ({minus}{Delta}H{sub 1}{degree} (kcal/mol):27.6, present work; 26.8, Moet-Ner. {minus}{Delta}H{sub 2}{degree} (kcal/mol): 29.3, present work; 29.3, Moet-Ner). These values are also in good agreement with recent theoretical results.

• OSTI ID: 6438823
• Journal Information: Journal of Physical Chemistry; (USA), Journal Name: Journal of Physical Chemistry; (USA) Vol. 94:12; ISSN 0022-3654; ISSN JPCHA
• Country of Publication: United States
• Language: English

Related Subjects

37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY
400201* -- Chemical & Physicochemical Properties
CHEMICAL REACTIONS
DATA
DATA ANALYSIS
ENTHALPY
EXPERIMENTAL DATA
GAS ANALYSIS
HYDROGEN COMPOUNDS
HYDROXYL RADICALS
INFORMATION
MEASURING INSTRUMENTS
MEASURING METHODS
NUMERICAL DATA
OXYGEN COMPOUNDS
PHYSICAL PROPERTIES
RADICALS
TEMPERATURE DEPENDENCE
THERMODYNAMIC PROPERTIES
THERMODYNAMICS
WATER